Unhealthy habits, sunlight radiation, and environmental pollutions make continuous stress on the human body, which interferes the metabolic exchange between cells of the human body. It causes the immune deficiency and eventually leads to multiple chronic diseases. This is the progress of aging. Inflammation starts without the patient being able to notice ('silent inflammation'), but grows up to be chronic if the self-healing power of the human cells doesn't work well. It means that 'silent inflammation' can become a chronic disease, which becomes the untreatable degenerative conditions such as dementia, diabetes complications, vascular disease, chronic pains, and irreversible skin troubles.