Fermented foods such as curd do more harm than good to the elderly in general, and the elderly should eat fermented foods such as curd sparingly in general. Fermented foods, such as curd, retain some of the active ingredients of the food, such as dietary fiber, protein, fat, carbohydrates, etc., during the fermentation process. Take a brand of curd as an example, every 100 grams of curd contains 132 calories, 11.6 grams of protein, 7.9 grams of fat, 3.9 grams of carbohydrates, 0.8 grams of dietary fiber, 20 micrograms of vitamin A, vitamin E 9.18 mg. Fermented foods such as curd have the ability to help the elderly with nutritional supplements. However, fermented foods such as curd are processed through special techniques and may contain some harmful flora, sodium (e.g., 100 grams of curd contains 2012 milligrams of sodium) and other substances, and the elderly’s own physical condition is relatively poor, and eating too much curd and other fermented foods can easily cause hypertension, gout and other diseases to flare up or aggravate, which is detrimental to health. For the elderly, eating fermented foods such as curd is more bad than good, and it is recommended that the elderly should eat less fermented foods such as curd in general.