A good diet is central to overall good health. But which are the best foods to include in your meals, and which ones are best avoided?
Although it contains no nutrients, water is a vital component of our diets. It's essential for the growth and maintenance of our bodies, as it's involved in a number of biological processes. But most of us don't get nearly enough.
Water comprises 50 to 70 per cent of an adult's total body weight, and without regular top-ups, our body's survival time is limited to a matter of hours or days.
Water is lost from the body through urine and sweat, and must be replaced through our diets. Many people, though, don't consume enough and as a result may become dehydrated, causing symptoms such as headaches, tiredness and loss of concentration.