Are seed oils actually bad for you? What the evidence separates
Thirty trials raised people's intake of the main fat in seed oils and measured inflammation. Nothing moved. The argument worth having is about what you would eat instead.
Nutrient Notes — Nutrition and wellness, with the sources attached
Protein and fullness: why higher-protein diets tend to work
Trade carbohydrate for protein at the same calories and you lose about 0.79 kg more in twelve weeks. Protein really does make people feel fuller. Its sturdier benefit is keeping weight off.
Which probiotic strains have trial evidence, and for what
Two uses hold up in the trials: diarrhea while you are on antibiotics, and the C. difficile infection that can follow. The dose mattered more than the strain name on the front of the box.
When to take vitamins: with food, without, and what not to pair
Vitamin D absorbed 32% better when it was swallowed with a meal containing fat. Iron is the reverse problem, and the coffee rule runs one way: before the meal is fine, after is not.
Ultra-processed food: what the definition covers and what the trials show
Ultra-processed means built from extracted substances and additives, not food that has merely been cooked or canned. Fed matched menus and left alone, people ate hundreds of calories more of it.
Keeping muscle after fifty: protein plus lifting, not either alone
Protein supplements on their own did nothing for muscle in adults over 50. Alongside lifting, the same protein added about half a kilo of arm and leg muscle and a firmer grip.
Your melatonin dose is probably too high
Melatonin stops working better above about 4 mg a night, and the whole effect is minutes of sleep rather than hours. The hour you take it matters more than the number on the bottle.
Exercise for mood: how much, and what kind
Exercise cut depression symptoms by a moderate amount, and walking did as much as anything else. How much people trained barely mattered. Who they trained with mattered more.
Can you boost your metabolism? What the trials measured
Lifting weights raised resting metabolism by about 96 calories a day. Green tea added roughly 38. Eating more often changed nothing at all.
Do probiotics survive the stomach, and does it matter?
Whether a probiotic turns up in stool depends on the strain, except above 10 billion CFU a day, when every strain was recovered. The trials that found benefit did not need colonization.
Antioxidant pills: the trials that ended the idea
Nearly 300,000 people were given antioxidant pills in trials. They did not live longer, the best-run studies hint they died slightly sooner, and beta-carotene raised lung cancer risk in smokers.
Plant vs animal protein: does quality matter in practice?
Plant protein trailed animal protein for muscle mass by a small margin, and only in adults under 60. Soy matched milk outright, and 26 grams of soy did the work of 19 grams of whey.
Nutrition after fifty: what actually changes
Older muscle builds less from the same meal, so protein targets go up after 65 - about 70 to 84 grams a day at 70 kg. The vitamin gaps are about what people eat, not about failing absorption.
Does magnesium glycinate help sleep? The trials, in plain terms
In poor sleepers, magnesium bisglycinate beat a dummy capsule by 1.6 points on an insomnia score over four weeks. Older adults with insomnia fell asleep about a quarter of an hour sooner.
Does creatine help memory? The cognition trials, by age
Creatine gives a small memory benefit and leaves overall thinking unchanged. In healthy older adults, the group most sold on it, the evidence is two small studies.
Do multivitamins do anything? The long trials, in plain terms
A daily multivitamin shifts cancer risk by around one percentage point and does nothing for heart disease or death. The memory headline traces back to a single trial.
Does your metabolism really slow down after thirty?
Measured energy expenditure falls by roughly 150 kcal a decade across adult life, and most of that is lost activity, not a slower engine. Nothing in the data happens at thirty.
Fiber before probiotics: the order most people get wrong
Fiber's benefit rests on studies covering seventeen million people and peaks between 25 and 29 grams a day. Probiotic evidence is a set of small, strain-specific trials.
Can diet improve depression? What the trials actually show
Ask people to change how they eat and their depression scores improve a little; anxiety does not move at all. The bigger claims come from surveys, not from trials.
How much fiber, and which kinds actually count
The band where risk fell furthest was 25 to 29 g a day, and what mattered was the total. Which kind of fiber, the soluble and insoluble split printed on the label, barely predicted anything.
How much protein you need at your weight, and when more pays off
The official number is a floor for avoiding deficiency, not a target. It works out to about 56 grams a day at 70 kg, and eating past it pays mainly if you lift or you are dieting.
Omega-3 for mood: why only EPA-heavy fish oil worked in the trials
Across 26 trials, omega-3 improved depression scores by a small margin, and only EPA-heavy formulas carried the effect. It is real, modest, and easy to overstate in either direction.
Protein per meal: does spreading it out matter?
Eating protein evenly across the day raised muscle-building by a quarter over 24 hours. Trials that ran for weeks and weighed the muscle found almost no difference. Total intake decides it.
Which sleep supplements actually work? Ranked by the evidence
Melatonin has real evidence behind a small effect. Herbal formulas have a mountain of studies and a credibility problem. Most of the shelf has nothing tested at all.
Vitamin D dosing by blood level, not by bottle
How far a dose moves your blood level depends on where you start and what you weigh. Body weight alone explained 34.5% of the variation between groups of people taking supplements.
Why calorie calculators disagree with each other
Each calculator runs a different equation. The best puts roughly three people in four within 10% of a measured resting rate, and the activity multiplier on top is barely validated.