Jane Clarke is Britain’s leading nutritionist. Her books are read by millions and she acted as adviser to Jamie Oliver on his ground-breaking School Dinners programme.

As well as being an advocate of healthy eating, she passionately believes that many of our illnesses can be treated through our diet. Every Tuesday in Good Health, she will be answering your questions.

Could you recommend a good all-round mineral and vitamin supplement? I’m 48, of slim build and have no major illnesses, but I want to try to stay healthy. What would you suggest? Kate Jenkins, London.

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