Hi sweating happens mostly for humidity, exhaust working ,physical exercises. For your case called HYPERHIDROSIS. this may be hormonal disbalance, diabetes, tumor, infection etc. Some other reason also for some medicines, Bllod pressure, Cardiac problem, stress, So the Diet should be avoid excess table salt,onion,garlic, too much hot liquid foods,,alcohol,coffee, avoid stress,heavy work at a time,hotness,high temperature, drink water more ,skim milk,dairy products, curd,yogurts green vegetables, olive oil for cookias vegetable oil. all whole grains, hole fruits, calcium rich all foods are very helpful for u.