Food Quality & Dietary Patterns

The answer

+508 kcal/day (on UPF)

Net swing: gained 0.9 kg on UPF · lost 0.9 kg on unprocessed

On the ultra-processed week, the same person ate about 500 extra calories a day without trying — roughly a meal's worth. That alone explains a pound of weight change every couple of weeks. The menus matched on paper, so the difference came from the food itself: easier to chew, faster to eat, harder to feel full from. The takeaway isn't "never eat UPF" — it's that calorie counts on a label undercount what UPF actually does to your appetite.

The answer

32 outcomes worsened

Convincing: CVD death +50% · T2D · anxiety +48% · mental disorders +53%. Highly suggestive: all-cause death +21% · obesity +55% · sleep +41%

Across 45 health outcomes the review looked at, 32 showed higher UPF intake tracking with worse health. The four most solid links are cardiovascular death, type 2 diabetes, anxiety, and common mental disorders. Because almost all of the underlying data is observational, you can't read these as exact dose-response — people who eat more UPF also tend to smoke more, exercise less, and earn less. But the direction and consistency across this many outcomes is unusual.

The answer

+15% % mortality (highest vs lowest UPF)

Dose-response: +10% mortality risk for every 10% increase in UPF share of diet

If you go from a diet that's mostly whole foods to one that's mostly ultra-processed, your risk of dying during a typical follow-up window is about 15% higher. The dose-response number is the practical one: every 10 percentage points more of your calories from UPF tracks with roughly 10% higher mortality. Like all UPF mortality data, this is observational — UPF-heavy diets travel with smoking, less activity, and lower income — but the dose-response gradient strengthens the case for treating it as more than coincidence.

The answer

+37% % T2D (highest vs lowest UPF)

Also: hypertension +32% · high triglycerides +47% · low HDL +43% · obesity +32%

If your diet is heavy on ultra-processed food, your risk of developing type 2 diabetes runs about 37% higher than someone whose diet is mostly whole foods. The same direction shows up across blood pressure, cholesterol, and weight gain — your metabolism takes the broad hit, not one specific marker. Only the diabetes link is on firm evidentiary ground here; the others are real but lower-confidence. CVD and death weren't pooled in this review.

The answer

+25% % mortality (vs lowest UPF)

Also: +29% heart disease · +34% stroke · +23% obesity · +20% depression

These numbers compare the highest UPF eaters to the lowest — not "any UPF" vs "none." And because this is observational data, it tells you the association exists, not that UPF directly causes these outcomes. People who eat more UPF also tend to exercise less, smoke more, and eat fewer fruits and vegetables. The signal is consistent enough across studies to warrant cutting back, but don't treat it as a precise dose-response.

The answer

Yes ≈48% fewer events

Major cardiovascular events: OR 0.52 (95% CI 0.32–0.84) across 4 RCTs

This is about as strong as diet evidence gets: in randomized trials, a Mediterranean pattern — olive oil, nuts, vegetables, legumes, fish, whole grains — cut major cardiovascular events by about half versus control diets over 2–7 years. It's the benchmark whole-food pattern the app points to. You don't have to follow it perfectly; even shifting toward it moves you in the protective direction.

The answer

More = less risk dose-dependent

Atrial fibrillation HR 0.65 · coronary heart disease HR 0.95 · stroke / hypertension / CVD mortality HR ~0.97 · each +1 adherence point helps

The more closely you eat Mediterranean-style, the lower your cardiovascular risk trends — and it scales, so partial adherence still counts. The size of the benefit varies by outcome (bigger for atrial fibrillation, smaller for things like blood pressure), and the most reliable evidence comes from the PREDIMED randomized trial rather than the observational studies. Treat it as a direction to move toward, not pass/fail.

The answer

−23% all-cause mortality (60+)

All-cause mortality −23% · cardiovascular mortality −27% · observational, not proof of cause

For adults over 60, sticking closely to a Mediterranean pattern is associated with roughly 23% lower risk of dying from any cause and 27% lower cardiovascular death. Because this is observational, it can't prove the diet itself is the cause — people who eat this way often exercise more and smoke less. Still, it lines up with the stronger randomized evidence, so it's a well-supported way to eat for the long haul.

The answer

−441 kcal/day

Spontaneous intake −441 kcal/day · −4.9 kg over 12 weeks eating freely

Protein is the most filling macronutrient, and this classic study shows why it matters: bumping protein to about 30% of calories led people to eat ~441 fewer calories a day without trying, and to lose about 5 kg over 12 weeks. For you, that means hitting your protein target isn't just for muscle — it quietly makes a calorie deficit easier to sustain because you feel full on less.

The answer

Leptin vs ghrelin

Ghrelin drives hunger before meals · leptin signals fullness · obesity blunts leptin (leptin resistance)

Your appetite isn't pure willpower — it's largely two hormones. Ghrelin spikes when your stomach is empty and makes you seek food; leptin, released from fat tissue, tells your brain you have enough stored energy. The catch: carrying more body fat can make you leptin-resistant, so the fullness signal gets muffled and hunger stays high. That's biology, not a lack of discipline — and it's why steady habits that support these signals matter more than trying to white-knuckle hunger.

The answer

≈1–2 kg (small)

Time-restricted eating −1.37 kg · fewer meals −1.85 kg · earlier calories −1.75 kg · authors: "small, uncertain importance"

When you eat can nudge your weight a little — time-restricted eating, eating fewer times a day, and shifting more food to earlier all led to modest losses of about 1 to 2 kg. But the researchers are upfront that these effects are small and may not matter much clinically. Meal timing is a fine-tuning lever, not a substitute for overall calories and food quality — use it if a pattern helps you eat less, not because the clock itself is magic.

The answer

Convincing for heart + longevity

Convincing-grade: CVD mortality, all-cause mortality, pancreatic cancer · strong: CVD & coronary disease

Fiber is one of the few nutrients where the evidence reaches "convincing" — the top grade — specifically for living longer and lower heart-disease and cardiovascular-death risk. It's observational data, so it can't prove fiber alone causes the benefit, but the consistency across hundreds of studies is why fiber is worth tracking. Most people fall short; getting to ~25–38 g/day from whole foods is a high-leverage habit.

The answer

Yes more good bacteria

Bifidobacterium SMD 0.64 · Lactobacillus SMD 0.22 · fecal butyrate SMD 0.24

Fiber feeds your gut bugs. In randomized trials, more fiber — particularly fermentable fibers found in onions, garlic, legumes, oats, and chicory — grew beneficial Bifidobacterium and boosted butyrate, a compound that nourishes the gut lining and supports metabolism. Because these were controlled trials, the effect is real, not just "healthy people have better guts." Variety of plant fibers matters more than any single supplement.

The answer

+8% diabetes risk per 5 GI units

RR 1.08 per 5 GI units (95% CI 1.02–1.15) · observational, not proof of cause

The kind of carbs you eat seems to matter, not just the amount. Diets with a higher glycemic index — lots of white bread, sugary drinks, refined starches — were linked to modestly higher diabetes risk, about 8% more per 5-unit GI step. This is observational, so it can't prove causation, but it fits what we know about blood-sugar spikes. Favoring lower-GI choices (whole grains, legumes, fruit, and pairing carbs with protein, fat, or fiber) is a sensible hedge.

The answer

+26% type 2 diabetes risk

Type 2 diabetes RR 1.26 (95% CI 1.12–1.41) · metabolic syndrome RR 1.20 (1.02–1.42)

Regularly drinking sugary beverages — soda, sweet tea, energy and fruit drinks — is linked to noticeably higher risk of type 2 diabetes and metabolic syndrome. Because liquid sugar hits fast and doesn't make you feel full, it's an easy thing to over-consume. It's observational data, but the signal is consistent, and swapping even one or two sugary drinks a day for water or unsweetened options is one of the highest-leverage sugar cuts you can make.

The answer

+20% type 2 diabetes risk

Type 2 diabetes +20% · obesity +17% · coronary heart disease +15% · stroke +10%

Across roughly 1.5 million people, those drinking the most sugar-sweetened beverages carried higher risk of obesity (+17%), type 2 diabetes (+20%), coronary heart disease (+15%), and stroke (+10%). It's observational, so other habits play a role, but the pattern is remarkably consistent with the trials on liquid sugar. Cutting back on sugary drinks is one of the clearest, easiest wins in a health-focused diet.

The answer

Likely helps post-exercise inflammation

Reduced key inflammatory markers (e.g. IL-6, CRP) after muscle-damaging exercise · per-marker effects uncertain

Taking omega-3s (EPA/DHA from fish oil) appears to calm the inflammation that follows hard, damaging workouts, which may support recovery. The evidence points that way, but the exact benefit per marker isn't nailed down and some results are mixed. Treat omega-3 as a reasonable recovery-support nutrient — most useful if your diet is low in oily fish — rather than a guaranteed performance booster.

The answer

Lower muscle-damage markers

Reduced creatine kinase, LDH, and myoglobin after exercise

Omega-3s appear to blunt the rise in muscle-damage markers (like creatine kinase) that show up after demanding workouts, which may mean less internal muscle disruption and smoother recovery. It's a modest, supportive effect — helpful alongside the basics of sleep, protein, and sensible training load, not a replacement for them. Oily fish 2–3×/week or a quality EPA/DHA supplement covers it.

The answer

Promising but mixed

Lowered CK/LDH and IL-6 in some trials · TNF-α often unchanged · muscle-mass benefit not yet proven

Omega-3s look promising for recovery — reducing some inflammation and muscle-damage markers — but the evidence is mixed and the authors are openly cautious, since not every marker responds and the best dose and duration aren't established. A fair read: worth including if your diet is low in oily fish, with realistic expectations. It supports recovery at the margins rather than transforming it.

The answer

In mice, yes (no human trial here)

CMC & polysorbate-80 → mucus thinning, inflammation, metabolic syndrome in mice · microbiota-dependent

This landmark study is why emulsifiers are on the radar — but it's a mouse study, so treat it as a red flag to investigate, not proof of human harm. It showed that two detergent-like additives (CMC and polysorbate-80) can erode the gut's mucus barrier and stir up inflammation through the microbiome. Human follow-ups (see the CMC feeding trial in this section) are starting to back parts of it up. Reasonable takeaway: minimizing heavily emulsified ultra-processed food is sensible, without panicking over trace amounts.

The answer

Yes in a controlled trial

15 g/day CMC, 11 days → reduced microbiome diversity, lower SCFAs, mucus encroachment in 2 of 7

This is the first human trial to back up the mouse findings: a common emulsifier, eaten at a realistic dose, measurably disturbed the gut in healthy people over just 11 days. It's a small, short study, and not everyone reacted strongly — but it moves emulsifiers from "worrying in mice" toward "plausibly relevant in people." Whole-food-based eating naturally keeps these additives low.

The answer

CMC & P80 worst; lecithin spared

CMC, polysorbate-80, carrageenans, gums → detrimental · lecithin → minimal impact (ex vivo model)

Not all emulsifiers are equal. In this lab-model screen of 20 additives, the synthetic detergents CMC and polysorbate-80 (plus some carrageenans and gums) most disturbed gut bacteria, while lecithin looked benign. It's an ex-vivo model, so it shows biological potential rather than proven effects in your body — but it's why the app treats CMC and polysorbate-80 more cautiously than lecithin. Check ingredient lists: the additive names, not just "emulsifier," tell the story.

The answer

No overall effect (subgroup signal)

Primary outcome null · overweight subgroup: ↓ insulin sensitivity, ↑ CRP/IL-6 · gut permeability ↑ overall

Contrary to scarier headlines, this trial did not show that carrageenan causes insulin resistance in general — the primary result was null in healthy young men. It did nudge gut permeability up, and hinted at harm specifically in heavier participants, who may be more susceptible. Read it as "possible concern for some, not proven harm for all." If you're metabolically healthy, dietary carrageenan at additive levels has weak evidence of harm; minimizing ultra-processed sources is still reasonable.

The answer

In some, yes (mostly mouse data)

Mouse mechanism confirmed via antibiotics + microbiome transplant · human effect seen only in a subset

This is the landmark study behind the "sweeteners might harm your gut" idea — but read it carefully: the causal proof is in mice, and only some humans reacted. It suggests that in susceptible people, heavy sweetener use could nudge blood-sugar control through gut-bacteria changes. Practically, that means "use with awareness," not panic: occasional diet-soda use in an otherwise whole-food diet has little proven human harm (see the human RCTs in this section).

The answer

Depends on the person

Effect appears in only some individuals · individual microbiome variation likely explains conflicting trials

Whether sweeteners affect you may come down to your personal gut bacteria. This review makes the case that no-calorie sweeteners can shift the microbiome and blood-sugar response — but only in a subset of people, which is why big trials often show nothing on average. That's a "know yourself" situation: if sweeteners seem to bother your digestion or you use a lot daily, cut back; if not, the average human harm signal is weak.

The answer

RCTs: no effect

RCTs: BMI −0.37 kg/m² (not significant) · cohorts: modest ↑ BMI / obesity / hypertension — likely reverse causation

Here's the tension in one study: controlled trials show diet sweeteners don't move your weight either way, while observational data links them to worse metabolic markers. The likely explanation is reverse causation — people already gaining weight switch to diet products, not the sweeteners causing the gain. Bottom line: sweeteners aren't a weight-loss tool, but the trial evidence doesn't support the claim that they cause weight gain or metabolic harm at normal intakes.

The answer

−0.8 kg (vs sugar)

Body weight −0.80 kg · fat mass −1.10 kg · waist −0.83 cm vs caloric comparators · vs water: no difference

Used to replace sugary foods and drinks, low-calorie sweeteners produced small weight, fat, and waist reductions — around 0.8 kg on average. But they were no better than simply drinking water, so they're best seen as a stepping-stone off sugar rather than a magic tool. If diet drinks help you cut sugar, they can assist a little; if water works for you, it works just as well.

The answer

Partly but prep fixes it

Phytate lowers iron & zinc absorption · soaking / sprouting / fermenting / leavening reverse much of it

Plant foods pair minerals with phytate, which cuts how much iron and zinc you actually absorb — one reason plant-based eaters may need more of these minerals. It's not a reason to avoid grains and beans (they're highly protective foods); it's a reason to prepare them well. Soaking, sprouting, sourdough fermentation, and pairing with vitamin-C-rich foods meaningfully boost mineral uptake. The app's bioavailability scoring reflects this gap.

The answer

Phytate + polyphenols

Phytate co-precipitates iron/zinc · polyphenols bind iron · soaking / germination / fermentation restore absorption

The iron and zinc on a bean's nutrition label overstate what you'll absorb, because phytate and polyphenols lock much of it up. The fix is old-fashioned food prep: soaking, sprouting, and fermenting legumes activate enzymes that free the minerals. This is why traditional cuisines soak and ferment beans and grains — and why the app scores minimally processed legumes differently from prepared ones for mineral delivery.

The answer

32.5% → 13% Mg absorption

Fractional Mg absorption: 32.5% (no phytate) → 24% (low dose) → 13% (high dose), dose-dependent

Phytate's reach extends beyond iron and zinc — it also blunts magnesium absorption, here by up to about 60% at whole-grain-equivalent doses. Practically this is a modest trade-off, not a reason to fear whole grains: they still deliver more total magnesium and fiber than refined grains, and preparation (leavening, soaking) recovers much of the mineral. It's why the app models bioavailability, not just the raw milligram counts on labels.

The answer

Absorption varies by food + structure

Most abundant dietary polyphenols aren't always the best absorbed · matrix & processing shift uptake

More polyphenols on paper doesn't always mean more benefit — how a food is built and processed changes what reaches your bloodstream. This is why the app treats polyphenol-rich whole foods (berries, tea, coffee, cocoa, colorful vegetables) as a quality signal, while recognizing that a supplement or extract won't necessarily match whole-food delivery. Variety across polyphenol families beats chasing a single "superfood."

The answer

−7% all-cause mortality

All-cause mortality HR 0.93 (95% CI 0.91–0.95) · observational, not proof of cause

Diets richest in polyphenols — lots of fruit, vegetables, tea, coffee, herbs, and cocoa — track with about 7% lower risk of dying over the study periods. Because this is observational, the polyphenols themselves aren't proven to be the cause; they travel with generally healthier eating. Still, it's a good reason to favor colorful, plant-rich meals. The effect is real but modest — a supporting reason, not a magic bullet.

The answer

Whole fruit lowers risk; juice raises it

Blueberries −26% (HR 0.74/3 servings/wk) · grapes −12% · apples/pears −7% · fruit juice +8%

Eating whole fruit and drinking fruit juice pull in opposite directions for diabetes risk — blueberries, grapes, and apples were protective, juice was harmful, despite similar sugar. Juicing strips the fiber and disrupts the matrix that slows sugar absorption. Practical rule: eat your fruit, don't drink it. Whole fruit is a health food; fruit juice behaves more like a sugary drink.

The answer

The DII a validated score

Scale −8.87 (anti-inflammatory) to +7.98 (pro-inflammatory) · 45 food parameters · 6 biomarkers

"Inflammatory diet" isn't just a buzzword — it's measurable. The Dietary Inflammatory Index turns what you eat into a number based on how each component affects inflammation markers in the blood. Anti-inflammatory foods (fiber, colorful produce, tea, spices, omega-3s) pull the score down; refined carbs, excess saturated fat, and processed foods push it up. This tool underpins the app's inflammatory-quality axis.

The answer

+36% CVD risk (worst vs best diet)

Highest vs lowest DII: RR 1.36 (95% CI 1.19–1.57) · ~8% higher CVD risk per DII point

The way you eat maps onto heart risk through inflammation: the most pro-inflammatory diets carried about a third higher cardiovascular risk than the most anti-inflammatory ones. It's observational, so it reflects association within overall dietary patterns rather than proof — but it's consistent, and the direction is unsurprising. Shifting toward anti-inflammatory foods (produce, fiber, fish, olive oil, spices) is a low-risk, well-supported move.

The answer

Contested ratio hypothesis

Western ~15–17:1 vs ancestral ~1:1 · lower ratios proposed as anti-inflammatory · "ideal ratio" debated

The idea here is that we eat far more omega-6 (from processed seed oils) relative to omega-3 (from fish, walnuts, flax) than our biology evolved for, tilting toward inflammation. It's a plausible and influential framing — but treat specific "target ratios" cautiously, because the evidence is contested and many experts think simply getting enough omega-3 matters more than the ratio. The uncontroversial takeaway: eat more omega-3 sources and lean less on ultra-processed foods heavy in refined oils.

The answer

−0.8 kg (cutting sugar)

Reduce free sugars: −0.80 kg · isocaloric swap for other carbs: −0.04 kg (no change)

Cutting added sugar helps your weight — but mostly because it helps you eat fewer calories, not through some unique fat-storing property. When people cut sugar, they lost about 0.8 kg; when sugar was swapped calorie-for-calorie with other carbs, weight barely moved. The practical takeaway: added sugar (especially in drinks) is easy to over-consume, so trimming it is an effective way to reduce total intake. This is the evidence behind the WHO's "under 10% of calories" free-sugar guideline.

The answer

<25 g/day added sugar

Harmful links across ~45 outcomes · each 250 mL/day sugary drink: +17% coronary heart disease

Across the whole evidence base, higher added-sugar intake is linked to worse outcomes on many fronts, and sugary drinks are the worst offender — each daily serving tracks with meaningfully higher heart-disease risk. The authors suggest keeping free and added sugars under about 25 g/day (roughly 6 teaspoons). Most of this is association rather than proof, but the breadth and consistency make cutting back a safe bet. Whole fruit isn't the concern — it's added sugars and sweet drinks.

The answer

Only in excess (esp. from drinks)

Excess-calorie sugars ↑ liver fat (SMD 1.72) · sugar-sweetened beverages worst · no effect when calories controlled

Sugar drives liver fat mainly when it piles on extra calories — and sugary drinks are the biggest culprit because they're so easy to over-consume. When people ate sugar within their calorie needs or swapped it calorie-for-calorie with other carbs, liver fat didn't rise. So it's less "sugar is uniquely toxic" and more "liquid sugar makes overeating effortless." Keeping added sugar (especially drinks) modest protects your liver as part of overall calorie balance.

The answer

90 g/day whole grain

CVD −22% (RR 0.78) · cancer mortality −15% · all-cause mortality −17% · benefit up to ~210–225 g/day

Aiming for about three servings of whole grains a day — think oats, brown rice, whole-wheat, barley — lines up with substantially lower risk of heart disease, cancer death, and dying early. More helped up to a point (~7 servings). It's observational, so it can't fully prove cause, but refined grains showed none of this benefit, which points to the intact grain (bran, germ, fiber) doing the work. Swapping refined for whole grains is an easy, high-value upgrade.

The answer

−21% colorectal cancer risk

Whole grain (high vs low) RR 0.79 · total fiber: no protection after adjustment (RR 0.99)

In nearly half a million adults, those eating the most whole grains had about 21% lower colorectal cancer risk — but total fiber, after accounting for other habits, wasn't protective on its own. That suggests it's the whole-grain package (fiber plus the germ, bran, and their compounds), not fiber in isolation, that matters. It's observational, so treat it as a reason to favor intact whole grains over refined, not a guarantee.

The answer

≈10% lower fasting insulin

Fasting insulin −15 pmol/L (~10%) on whole grain · improved insulin sensitivity at matched calories/macros

This small but tightly controlled trial isolates grain quality: same calories, same macros, only whole vs refined grains — and the whole-grain diet improved insulin sensitivity and lowered fasting insulin. That means "a carb is a carb" isn't the whole story; the intact grain does something extra for blood-sugar control. It's a small study, so don't over-read the exact numbers, but it supports choosing whole over refined even when the macros look the same.

The answer

Good (from vegetables)

Vegetable nitrate vs lowest intake: CVD mortality HR ~0.51–0.63 · benefit plateaus · observational

Nitrate has a split reputation, and the source is everything. From vegetables — leafy greens, beetroot — higher nitrate intake tracked with substantially lower cardiovascular death in this Australian cohort. That's the good kind: vegetables pair nitrate with vitamin C and polyphenols that steer it toward beneficial nitric oxide rather than harmful compounds. The worry is nitrite added to cured and processed meats (see the IARC card), a completely different context. Don't fear nitrate in vegetables.

The answer

The food matrix decides

Vegetables supply ~80% of dietary nitrate · vitamin C & polyphenols block nitrosamine formation

The nitrate atom is identical whether it comes from spinach or a hot dog — what differs is the company it keeps. In vegetables, vitamin C and polyphenols block the conversion of nitrate/nitrite into cancer-linked nitrosamines, and the nitrate supports healthy blood flow. In cured meats, nitrite is added without those protectors and alongside heme iron and high-heat cooking, tipping toward harmful compounds. Same molecule, opposite outcomes — which is why the app scores them differently.

The answer

Group 1 processed meat

Processed meat: Group 1 (carcinogenic) · red meat: Group 2A (probably) · ~18% higher colorectal cancer per 50 g/day

"Same category as smoking" sounds alarming, but IARC groups reflect how CERTAIN the evidence is, not how dangerous something is. The evidence that processed meat can cause colorectal cancer is strong (Group 1), but the actual risk increase is modest — roughly 18% higher colorectal cancer risk per 50 g/day (about one hot dog). Red meat is a step below (probably carcinogenic). Practical translation: make processed meats an occasional food rather than a daily staple; you don't need to fear an occasional bacon sandwich.

The answer

Selectively yes with ≥6 mmol/day, >3 days

TTE +SMD 0.33 · Distance +SMD 0.42 · Endurance +SMD 0.48 · Peak power +SMD 0.25

Dietary nitrate (typically beetroot juice or nitrate salts) produces ergogenic benefits across some — but not all — exercise performance outcomes. Significant effects: time-to-exhaustion, total distance, muscular endurance, peak power output. Where the benefits don't appear: several other outcomes the umbrella review tested. The dose-response pattern: benefits are stronger with at least 6 mmol/day of nitrate and more than 3 days of supplementation. The takeaway: nitrate is a real but selective ergogenic aid — useful for endurance and peak-power events, less established elsewhere.

The answer

Trivially in clinical populations

Max TTE SMD 0.11 · Submax 0.16 · VO₂peak 0.002 · 6-min walk 0.01 · CVD distance 0.25 (small)

Important context: this paper specifically tests nitrate in patients with cardiopulmonary or metabolic disease — NOT healthy athletes. The pooled effect across most performance outcomes was trivial (SMDs of 0.01-0.16). Even though 46% of individual studies reported some benefit, the meta-analytic synthesis came out essentially null. The authors attribute the weak aggregate effect to study heterogeneity and small samples. The takeaway: the strong nitrate-in-healthy-athletes literature (see Poon 2025) does not extrapolate cleanly to patient populations.

The answer

Possibly a real but unproven signal

Top vs bottom quartile blood erythritol: MACE HR ~1.8–2.2 · promotes clotting in lab/animal models

This study put erythritol — a popular "keto-friendly" sweetener long considered inert — under suspicion. Higher blood levels tracked with more heart attacks and strokes, and it made blood platelets stickier in the lab. But important cautions: the human part is observational (in higher-risk patients), and blood erythritol is partly made by your own body from sugar, so it may be a marker of metabolic trouble as much as a cause. It's enough to warrant a "use with awareness" flag and more research — not a proven danger. If you use a lot of erythritol daily, moderation is prudent.

The answer

Yes made from glucose

Adiposity gainers: ~15× higher blood erythritol · high HbA1c: ~21× higher · endogenous via pentose-phosphate pathway

Here's the twist that complicates the erythritol-and-heart-disease story: your body makes erythritol internally from glucose, especially when blood sugar runs high. Young adults gaining belly fat had dramatically higher blood erythritol even before accounting for diet. That means a high blood level might reflect a body struggling with sugar rather than a spoonful of sweetener — an important caveat when interpreting the cardiovascular findings. It doesn't clear added erythritol, but it argues against panic and for better overall metabolic health.

The answer

+23% CHD per 2% of calories

Each 2% energy from industrial trans fat → ~23% higher CHD risk · raises LDL, lowers HDL

Not all fats are equal, and industrial trans fat (from "partially hydrogenated oil") is the one to eliminate outright — it's the only fat that both raises your bad cholesterol and lowers your good cholesterol at once. Even small amounts matter: a 2%-of-calories bump ties to roughly 23% higher heart-disease risk. There's no safe level, which is why regulators worldwide have banned it. If an ingredient list says "partially hydrogenated," that's a genuine red flag.

The answer

Yes, much worse

Trans fat: all-cause mortality +34%, CHD death +28%, total CHD +21% · saturated fat: no significant association

This large analysis sharpened an important distinction: industrial trans fat is clearly linked to dying earlier and to heart disease, while saturated fat's link to those outcomes was not statistically significant. That doesn't make saturated fat a health food — but it does put trans fat in a category of its own. Practical priority: eliminate trans fat (partially hydrogenated oils) first; treat saturated fat as "moderate," not "avoid at all costs." Observational data, so it maps associations, not proof.

The answer

No dairy trans fat looks neutral

Industrial TFA: RR 1.21 (trend, not significant, p=0.09) · ruminant TFA: RR 0.92 (no association)

The trans fat naturally present in dairy and beef isn't the villain — this analysis found no link between ruminant trans fat and heart disease, while industrial trans fat trended toward harm (it didn't reach statistical significance here, but the broader evidence, including Mozaffarian's review, does support industrial-TFA harm). So you don't need to avoid butter or full-fat dairy over their small natural trans-fat content. The target is manufactured "partially hydrogenated" oils — the distinction the app's scoring makes.

The answer

80–100% absorbed (additives)

Additive phosphate absorbed 80–100% vs 40–60% from whole foods · a concern mainly with reduced kidney function

The phosphorus added to processed foods behaves differently from the phosphorus in whole foods — it's almost completely absorbed, so processed products deliver a bigger phosphate hit than labels suggest. For healthy kidneys this is usually handled fine; the real concern is the large number of people with mild, undiagnosed kidney decline, for whom chronic high additive-phosphate intake can stiffen and calcify blood vessels. Another reason to lean toward whole foods over heavily processed ones.

The answer

44% of top foods

Frozen prepared 72% · dry mixes 70% · packaged meat 65% · baked goods 57% · soup 54% · yogurt 51%

Nearly half of best-selling packaged foods carry added phosphates — and you can't see them on the Nutrition Facts panel, which lumps additive phosphorus in with natural. They cluster in the usual ultra-processed suspects: frozen meals, boxed mixes, packaged meats, and baked goods. If you're watching phosphate (relevant mainly for kidney health), the ingredient list — not the nutrition panel — is where to look for phosphate salts.

The answer

~100% vs ~50% vs ~30% additive/animal/plant

Absorbed: inorganic additives ~100% · animal ~40–60% · plant (phytate-bound) ~20–40%

Not all phosphorus is equal. The inorganic phosphate in additives is almost completely absorbed, animal-source phosphorus about half, and plant-source (locked in phytate) the least. So a whole-food diet naturally delivers less absorbable phosphate than the same milligrams from processed foods — helpful for anyone managing kidney or vascular health. It's another case where the app models bioavailability, not just the number on the label.

The answer

EU: no longer safe (precaution)

Genotoxicity could not be excluded → EU ban (Aug 2022) · still permitted in the US

A European safety review couldn't rule out that titanium dioxide nanoparticles might damage DNA, so — applying the precautionary principle — the EU banned it from food. That's a regulator erring on the side of caution under uncertainty, not proof it causes cancer in people. It has no nutritional purpose (it's purely cosmetic whitening), so avoiding it costs you nothing. The app flags it partly because there's simply no upside to eating it.

The answer

In rats, concerning (not human proof)

E171 → gut immune disruption + preneoplastic lesions in rats · cancer promotion in a carcinogen-primed model

This is a key study behind the titanium-dioxide worry — but it's in rats, and the strongest cancer signal showed up when the animals were also exposed to a chemical carcinogen (E171 nudged the process along rather than starting it). That's a legitimate red flag for a purely cosmetic additive, not proof it causes cancer in people. Since TiO₂ adds nothing but whiteness, there's no reason to seek it out; the app treats it cautiously on exactly that basis.

The answer

Plausibly, if inflamed (animal/in vitro)

TiO₂ nanoparticles worsened colitis via the NLRP3 inflammasome in mice + human cell cultures

If you have an inflammatory gut condition like IBD, this study is worth knowing about: in mice and human cells, titanium-dioxide nanoparticles amplified gut inflammation through a specific immune pathway. It doesn't prove titanium dioxide causes IBD in people, and healthy guts may handle it differently — but for a cosmetic-only additive, "might aggravate inflammation in susceptible people" is reason enough to avoid it. Those managing IBD have the strongest case to skip E171.

The answer

Yes small effect, general population

Significant for some mixes/ages (p 0.001–0.044) · effect small but real · not limited to ADHD kids

This landmark trial found that ordinary artificial food dyes (plus a common preservative) nudged up hyperactivity in typical children, not just those with attention problems. The effect was modest and didn't show up in every subgroup, so it's not a guarantee your child will react — but it was consistent enough that European regulators now require warning labels on foods with these dyes. If a child seems sensitive, cutting artificial colors is a cheap, harmless experiment worth trying.

The answer

~0.4 effect size (ADHD kids)

Effect ~0.4 SD in children with ADHD · smaller effect in general population · independent of parental expectation

Food dyes aren't a myth-level cause of hyperactivity, but they're not trivial either: in kids with ADHD, removing them produced a small-to-moderate improvement (roughly a third to half the size of stimulant medication), with a smaller effect in typical children. Not every child responds. But since eliminating artificial colors carries no downside, it's a reasonable first step for a sensitive or ADHD child — a low-cost experiment, not a cure.

The answer

Concerns, low risk

Red 3 = animal thyroid carcinogen · Red 40 / Yellow 5 / Yellow 6 may carry trace contaminants · dyes are purely cosmetic

This review makes the case that synthetic dyes are inadequately tested and carry theoretical cancer and allergy concerns — most pointedly Red 3, an animal thyroid carcinogen (which the US FDA moved to revoke from food in 2025). Keep perspective: it's authored by a consumer-advocacy group, the strongest data are from animals or contaminant traces, and the estimated real-world cancer risk from approved dyes at normal intakes is low. But because dyes are purely cosmetic, "why eat them at all?" is a fair stance — which is how the app treats them.