1. Healthy middle-aged and elderly people, with no obvious organic diseases in various systems of the body and basically normal diet and daily life, are called health of the elderly. As long as this kind of old people follow the principle of "five grains for nourishment, five fruits for help, five vegetables for supplement, five animals for benefit, and the combination of smell and essence", they can pay attention to maintaining a balanced diet with comprehensive nutrition and physical and mental health, and there is no need to use special nourishing things.

2. Middle-aged and elderly people with yin deficiency and excessive fire often have symptoms such as dry mouth, constipation, flushing, red tongue and rapid pulse. They can use foods that nourish yin, purge fire and replenish essence, such as black-bone chicken, squab, millet, tremella, turtle, red dates, lotus seeds and walnuts, which are both food tonic and medicine tonic.

3. Middle-aged and elderly people with weak spleen and stomach often have indigestion, improper diet, loose stools and pale tongue. For this kind of old people, it is mainly to strengthen the spleen and stomach. Edible foods such as yam, fungus, coix seed, lily and fresh fish are easy to digest. If you do all kinds of nutrition porridge, you can nourish the stomach, tonify the deficiency and strengthen the spleen.

4. For the middle-aged and elderly people with yang deficiency and physical weakness, symptoms such as pale face, cold stomach and fear of cold, backache and knee weakness, asthma and hyperhidrosis often appear. For this kind of old people, you can eat more foods that help yang and qi. Such as eel, longan, litchi, etc. In winter, you can also choose mutton and dog meat isothermal food.