There are many kinds of vitamin B, such as vitamin B1, vitamin B2, vitamin B3 (niacin), vitamin B5 (pantothenic acid), vitamin B6, vitamin B7, vitamin B9 (folic acid), vitamin B12, etc. Vitamin B rich foods are animal liver, yeast, rice bran, malt, they contain a variety of vitamin B. Yeast is the richest in vitamin B and exists in a way that is easily absorbed by the body, and is a better source of supplemental vitamin B. Dairy products and egg yolk also contain a wide variety of vitamin B. Vegetables containing vitamin B are mainly green leafy vegetables, such as spinach, celery, rape, coronary, etc. Fruits containing vitamin B include pineapple honey, oranges, tangerines, bananas, grapes, etc., but are not the main source of vitamin B intake. The role of vitamin B family is synergistic with each other, so the effect of supplementing only one of them is not obvious, only comprehensive supplementation can achieve the role of maintaining health. Vitamin B is easily soluble in water and cannot be stored in the body for a long time. Modern people live a stressful life, stay up late, and relieve stress also tend to consume vitamin B. Lack of vitamin B can lead to easy fatigue, loss of appetite, depression, eczema, foot disease and other sub-health diseases. Vitamin B can be directly discharged with sweating and urination, so the renewal of metabolism is relatively fast and must be supplemented daily.