What are food supplements and what do they do?
Food supplements are concentrated sources of nutrients taken as a dietary top-up. They include fish oils, which have been shown to benefit heart health, minerals like iron to help prevent anaemia, and a whole list of vitamins, from A to K. Supplements contain higher amounts of nutrients than are found in most foods.
Why do people take food supplements?
All women of childbearing age (and who are sexually active) should take a 400μg folic acid supplement daily to prevent birth defects, such as spina bifida, in the baby. Many pregnancies are unplanned so it is important that women take folic acid even if they are using contraceptives.
In certain circumstances your doctor may advise you to take a food supplement e.g. supplements may be needed for fragile bones and sometimes older people may have difficulty absorbing the nutrients they need from food and need to take extra in supplement form.
Generally, you do not need to take food supplements if you are healthy and eat a normal balanced diet. That means a diet which contains a variety of foods, including starchy foods (preferably wholegrain), fruit and vegetables, low-fat dairy foods, lean meat and fish. Too much of certain supplements can be harmful and cause unwanted side effects.