Some studies reported skin improvements from collagen supplements. But many of these studies were sponsored, fully or in part, by cosmetic or supplement companies.
Claims that a product can boost testosterone levels imply that this will lead to a gain in muscle and strength.
OM85 harnesses molecules extracted from bacteria, and has shown promise in preventing severe respiratory infections. It seems to work by training the immune system.
Early research has pointed to a link between severe illness with COVID-19 and vitamin D deficiency. But there's more to the story.
The food we eat influences our bodies' immune responses to infection. So focusing on nutrition is one thing we can do to help protect ourselves in the face of the coronavirus threat.
Many people are taking glucosamine for their osteoarthritis. But do they really need to stop in light of new safety warnings?
Vitamin D is essential for good health and particularly for fighting infections and keeping the microbes in the human gut healthy. But in winter it can be difficult to get enough.
Talk of a 'breakthrough' in NAD+ anti-ageing supplements may be premature.
Most vitamins and other nutritional supplements are unlikely to prevent chronic disease. Invest in good quality foods, sleep and exercise instead.
Largest ever clinical study shows no benefit of vitamin D in preventing bone fractures.
A new review of 180 studies found little or no protective effects from taking dietary supplements, and actually found some harm.
Turns out taking antioxidant supplements after exercise doesn't do much to help reduce muscle soreness after all.
Six scientists on the supplements they take every day and why they take them.
Antioxidants are meant to be good for us, but not all antioxidants are equal.
Studies show that cinnamon can lower blood lipids in people with diabetes or metabolic syndrome.
The US and Canada began fortifying flour with folic acid in the late 90s. More than 70 countries followed suit, but not the UK.
A new study has found a link between high doses of vitamin B6 and B12 and lung cancer – but only in men.
Thinking about trying for a baby? Then now is the time for you and your partner to "spring clean" your food and lifestyle habits.
Recent evidence seems to deny the benefit of fish oil supplements for heart health. But the quality of the studies is not that great.
In many instances complementary medicines have no added benefit when compared to a placebo, or weak evidence of effectiveness.