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The exercise that lowers cortisol most is not the exercise that shifts visceral fat most. Two meta analyses disagree in a useful way — here is how to train given both.

"Cortisol belly" is not a medical diagnosis, and the stress hormone story behind it is weaker than the internet suggests. Here is what the evidence supports, and what actually shifts abdominal fat.

Senna tea is a real stimulant laxative with a one week label limit — not a daily wellness drink. What the gentler teas can and cannot do, and what actually treats chronic constipation.

Cochrane found no high quality evidence for any herbal supplement for period pain — yet fennel and ginger have real trial data. Here is how to read the disagreement, and the dose gap a teabag cannot close.

Herbal tea almost certainly counts toward your fluids — but it also inhibits iron absorption by up to 84%. What the hydration trial really tested, and the timing fix that solves the iron problem.

Hibiscus tea lowered systolic blood pressure by about 7 mmHg in trials — but the heterogeneity is huge and the best study excluded anyone on medication. Here is what that means for you.

Which herbal teas can affect prescription medicines, organised by drug class — blood thinners, blood pressure pills, sedatives, contraception, iron and thyroid tablets — and why most tea warnings are about green tea.

The weight loss claim rests on a regulatory misreading. The FDA category is for body contouring, not weight loss — and the difference is the whole story.

Light therapy has genuine evidence for seasonal and non seasonal depression — at 10,000 lux of white light. Red light therapy is a different thing entirely.

Knee osteoarthritis, rheumatoid arthritis and neck pain each have pooled evidence — with very different strength. Here are the effect sizes.

Pattern hair loss is the one consumer use with expert panel backing and a sham controlled trial. Here are the numbers, the limits and the device rules.

Panel, lamp, machine or bed — the formats differ in coverage and distance, not in physics. Here is how to read a spec sheet without being sold to.