Vitamins are essential for good health. This much we can agree on, but then things quickly become murky. There is so much information, contradictory research and advertising out there about the vitamin needs of endurance athletes, and how

of nutrition, it ranks foods based on their effect on blood sugar levels.The rise in sugar levels is graded from 0 to 100; the higher the number, the faster the absorption of carbs. Foods such as oatcakes, strawberries and cashew nuts have a low GI (under 55

.In general, plants contain less iron than animal foods and only two to 20 per cent of iron from plants is absorbed by the body, compared with 15 to 35 per cent from meat. Worse still, there are various compounds in everyday foods that affect iron absorption

little time for preparing a decent meal.Sometimes you just need to grab something quickly and that's where the trouble can begin. We asked Dr Kevin Currell, Performance Nutritionist for British Triathlon, for advice on 10 high-street takeaway options

Vitamins are essential for good health. This much we can agree on, but then things quickly become murky. There is so much information, contradictory research and advertising out there about the vitamin needs of endurance athletes, and how they can