For how we live.
For people without coeliac disease, a large cohort found gluten intake was not linked to heart disease — and cutting it often means fewer whole grains, the foods tied to lower cardiovascular and mortality risk.
Loading up on dietary fibre is the rare viral trend with strong data behind it: high-fibre eaters have markedly lower mortality. But the evidence is for whole foods, not powders, and tracks a habit, not a one-day stunt.
Two meta-analyses of dozens of randomised trials agree that about 3 grams a day of oat beta-glucan lowers LDL cholesterol by a small, real amount. The effect is genuine, modest, and dose-dependent.
Air-popped popcorn is a whole grain, high in fibre and low in fat — a legitimately good snack. What turns it unhealthy is butter, oil, salt and portion size, not the corn itself.
In a tightly controlled feeding trial, swapping high-GI for low-GI carbohydrate inside a healthy diet did not improve insulin sensitivity, cholesterol or blood pressure. The wider evidence rates the GI case as weak.
Higher whole-grain intake is consistently linked to lower rates of heart disease, cancer and early death, with benefit rising up to about seven servings a day. Refined grains show no such signal.
A Lancet series covering 135 million person-years found the largest risk reductions in that range. Trials of isolated fibre supplements produce much smaller effects on much narrower outcomes.