Can anyone suggest any decent books on eating healthily when training for a marathon. Or do you think it might be worth seeing a nutritionist? I have always struggled with my weight and am desperate to lose some pounds whilst training for the New York Marathon. I have run marathons in the past but always seem to put on weight! and I am desperate to do a PB but things are not looking good on the weight front. I have tried every diet there is but always put the pounds back on. Please help!