"Four diseases" is a concept in the Taoist art of health preservation, which refers to four common diseases that human beings face in the process of life, namely, spring disease, summer disease, autumn disease and winter disease. This is because the adaptability of human body to the environment will be different due to the change of seasons and the difference of human metabolism, which also provides theoretical basis for the occurrence of these four seasonal diseases.

We should take corresponding preventive measures against these four diseases. In spring, we should avoid excessive fatigue, pay attention to clearing liver toxicity and avoid overeating; Keep water intake in summer, avoid direct sunlight, and drink more mung bean soup to relieve summer heat; In autumn, the nutritional intake should be appropriately increased, and attention should be paid to keeping the lungs healthy; Pay attention to warm-keeping measures in winter, keep your body warm, and exercise properly to enhance your resistance.

The way of TCM health preservation emphasizes "prevention before illness", that is, prevention before illness. The concept of "four diseases" coincides with the concept of TCM prevention, so the method of TCM health preservation is very effective for preventing "four diseases", and the method of TCM health preservation is also targeted and individualized. In practice, we can make corresponding health care plans according to everyone's different physique and living habits.