slow matabolism

can anyone help? im worried as i never eat this much however ive been stuck at 12stone for years eating around 800 cals a day so eating more makes you loose weight? i understand that i have to increase my motabalism how long to speed it up?

well your body has came to a hault because you were eating less. I think since you are not getting enough calories you should go to GNC and buy these vitamins "Mega ultra women Energy and metabolism" The vitamins you are lacking will be in these wonder vitamins from GNC and it will kick start your metabolism.. I have been taking Mega men vitamins for the past 15 years, and I have been a size 30 or 31 in the waist and I am 32 now.... But also there are certain foods that boost your metabolism, things high in fiber ( whole grains, fruits and vegetables, oatmeal, 100% whole wheat bread, brown rice, cereals with high fiber such as Fiberone cereal which has 11 to 13g of fiber, sweet potatoes), skim milk ( the calcium and vitamin D gets rid of fat and blocks it from being stored), whey protein, lean proteins such as (grilled or baked chicken and fish) turkey, eggs, green tea, cayenne pepper, peanut butter, almonds, cook your foods in OLIVE OIL, and eat superfruits such as (blackberries, strawberries, blueberries, rasberries, acai, and cranberries... All of these things will speed up your metabolism!!!!!!!