First, physical reasons. Age spots are hereditary. If there are senile plaque patients in the family, people with genetic constitution are prone to senile plaque. This is why some people will never have senile plaques when they are old, while others will have senile plaques when they are young.
Second, living habits. For example, you often work or do activities outdoors, but you don't pay attention to sun protection. The stimulation of ultraviolet rays will cause senile plaques on your skin. In addition, it is also related to eating habits. For example, eating smoked, salted, roasted and fried foods often leads to senile plaques on the skin after being stimulated by such substances.
It is also related to mental emotions. People who are always depressed, anxious, have poor sleep and easily lose their temper are prone to senile plaques. This is because negative emotions can lead to endocrine disorders, thus affecting the body's immunity, skin immunity is affected, and senile plaques are prone to appear.