Hello, here is one example,, to you to think, salt in food causes hypertension and leads to many problems, avoiding salt in food, makes you never taste your food again in your life. Same thing here, your daily diet should contain 10-20%fat, which is necessary for the body, only too much oily foods causes health consequences, so avoid all junk foods from outside, ground nut oil, or sunflower oil can be taken ,, coconut oil should be avoided(but still theory is controversy) , eating chocolate will not cause any health defects, some times causes weight gain,, with daily exercise you can keep your body healthy. All the best.