Science
Vitamin D deficiency is rife. Should we all take a pill until April?
Official advice already says consider a supplement in autumn and winter. Millions do not.
Section
Wellness
Sleep, supplements, the gut and the habits that sit around a good diet.
Science
The gut-brain link is real. The yoghurt aisle is getting ahead of the science
Microbes influence more than digestion, but a supermarket ‘mood yoghurt’ is still a stretch.
Diet
Eight glasses a day is a myth. Here is how to think about water
Thirst, urine colour and the rest of your diet are better guides than a round number invented for posters.
Science
Creatine is not just for bodybuilders — and women have been left out
The supplement with the best evidence in sport is being studied for ageing brains and muscles. The marketing is already at a sprint.