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Health covers new medical research, public health, nutrition, fitness, mental health, sleep and the health services people rely on. Health stories can affect real decisions, so we report them with extra care. When we cover a study, we explain what kind of study it was, how many people took part, whether independent experts reviewed it before publication, and whether it shows cause and effect or only a link. We give the size of an effect as well as whether one was found, and we say when findings are early, small or come from animal or laboratory work. Our main sources are peer reviewed journals and recognised public health bodies, such as national health services and the World Health Organization, and we link to them so you can read the original. We do not promote medicines, treatments or supplements, and nothing in this section is medical advice. If a story raises questions about your own health, talk to a doctor or another qualified health professional. Everyday food, cooking and clothing guides that are not about health research appear in Lifestyle. Our editorial policy explains how we check health claims, and any change we make is recorded in our corrections log.

Our latest guide covers red chilli powder in daily cooking.

Topics we cover

  • Medical research
  • Nutrition
  • Fitness
  • Mental health
  • Sleep
  • Public health

Important: The information in this section is general and for information only. It is not medical advice and is not a substitute for advice from a doctor or other qualified health professional about your own situation. If you have a health concern, speak to a qualified professional; in an emergency, contact your local emergency services.

Health: frequently asked questions

What is the difference between correlation and causation in health studies?
Correlation means two things tend to happen together; causation means one actually causes the other. Many health studies can only show correlation, because other factors may explain the link. Randomised controlled trials are usually needed to show that something causes a health effect.
What does peer reviewed mean?
A peer reviewed study has been checked by independent experts in the same field before a journal publishes it. Reviewers look for problems with the methods, analysis and conclusions. Peer review makes errors less likely but does not guarantee a finding is correct, so results still need to be repeated by other researchers.
How much physical activity do adults need?
The World Health Organization recommends that adults do at least 150 to 300 minutes of moderate activity, or 75 to 150 minutes of vigorous activity, each week, plus activities that strengthen the muscles on two or more days. People with health conditions should ask a health professional what is right for them.