Fish is great for people trying to lose weight: lean, low-calorie meat great source of protein contains omega 3 FADAMI lote: Many people think that if some is good, a lot is better. This is not always the case, and high doses of certain vitamins are actually toxic. Read about the specific vitamins and check with your health care providerif you are unsure about how much to take -and how much may be too muchNote: Many people think that if some is good, a lot is better. This is not always the case, and high doses of certain vitamins are actually toxic. Read about the specific vitamins and check with your health care provider if you are unsure about how much to take -- and how much may be too much