Above 70 years old, the hair will become white. After the age of 70, with the normal aging of the body, the body’s melanin content will gradually reduce, which in turn leads to hair whitening, belongs to the body’s normal physiological phenomenon, do not have to be too anxious, in daily life, the elderly need to strengthen the nutritional and physical management, eat more fresh vegetables and fruits and protein-rich foods, regular diet, strengthen the body to exercise, to a certain extent, to be able to slow down the aging. In addition, the elderly due to aging, will lead to the body of the important organs of the functional reduction, such as the heart, brain, kidney, etc., resulting in the incidence of a variety of diseases is positively correlated with the age of the growth, the need to maintain good habits, the emergence of discomfort in a timely manner to seek medical attention.