Does your blood type tell you what to eat? We examine the ABO diet, the surprising history of blood types, and what studies of personalized nutrition actually show.
Nutrition
24 Articles
24
Evidence-based articles on food, diet, nutrients, metabolism, hydration, and eating patterns.
Long after harvest, an apple keeps consuming oxygen. So does a blueberry, at almost the same rate in the cold. Why does one last months and the other weeks?
We compared laboratory food tests with portions people actually eat. The cadmium comparison reverses. Other results become misleading unless you know which chemical was measured. Explore the Food Market Atlas.
Electrolyte drinks can change short-term fluid retention. But do healthy adults benefit from drinking them every day? We followed the evidence.
Breakfast at 10 a.m. may be early for one person and late for another. Three different clocks tell three different stories. Which one actually matters for health?
How much water should you drink? A data-driven guide to hydration, thirst, urine markers, food, exercise, heat, and when more water is not better.
Does magnesium improve sleep? An updated 2026 evidence review reveals modest trial effects, uncertain benefits, and a critical gap in baseline magnesium testing.
How acidic is the human stomach? Clinical pH measurements, 68-species comparisons and a surprising beaver exception reveal what stomach acid can and cannot tell us about evolution.
Fresh food can differ from stored food in oxidation state, flavor and nutrient content, but ORP is not a direct measure of healthfulness, antioxidant benefit or ‘life energy’. This article separates measurable redox chemistry from spiritual interpretation.
Tea does not have one normal ORP value. Redox potential depends on tea type, water, pH, temperature, oxygen, electrode setup and brewing conditions, so published mV values are not universal.
Can vitamin E raise testosterone in men? Human trials suggest no reliable benefit. We compare the hormone data, doses and safety risks, including SELECT.
Kefir began as a living culture in the North Caucasus. Human experiments reveal what it can do, what it cannot prove, and why one kefir differs from another.
For most lifters, the anabolic window is much wider than 30 minutes. Total daily protein matters more, while fasted training and rapid glycogen recovery are special cases.
Some people really are more resistant to weight gain. The explanation can include average food intake, NEAT, resting metabolism, appetite compensation, genetics and metabolic phenotype — not one magic “fast metabolism.”
Piperine can increase curcumin exposure, but the famous 2000% figure came from a tiny 1998 pharmacokinetic study. Better absorption does not automatically mean better clinical outcomes or greater safety.
Can you tell which olive oil is healthiest from the label? An evidence-based guide to freshness, extra virgin standards, polyphenols, price, cooking and what quality tests can actually prove.
Does cooking destroy nutrients, or sometimes make them easier to absorb? Human experiments, food chemistry and practical comparisons of heat, oils, vegetables and safety.
There is no single symptom that proves carbohydrate intake is too low. Fatigue, constipation and poorer high-intensity performance can occur, but energy, fiber, electrolytes and adaptation matter too.
Vitamin A has an unusual personality. Too little of it can damage vision, immunity and normal tissue...
Is aspartame safe? IARC classified it as possibly carcinogenic, while JECFA kept the ADI at 40 mg/kg/day. Here is what that means for cancer risk, side effects and everyday use.