The ingredient of white sugar is sucrose, which contains ingredients that can fatigue the pancreas. Brown sugar contains the least sucrose, so it is best to put brown sugar in coffee. Brown sugar is also an alkaline food, which is good for your health. White sugar can also produce high calories, such as two spoonfuls of white sugar, weighing about 8 grams, which can produce 28 calories, so in order to lose weight, we should also use less.
You can drink coffee without sugar, but put some milk or cream to protect the stomach wall from caffeine.
In a word, vitamin A can protect mucous membrane, skin and stomach wall, and if taken with fat, it can improve the absorption rate of vitamin A. Therefore, it is scientific to eat some foods rich in vitamin A and fat such as walnuts or cream snacks when drinking coffee.