Hair Growth: Which peptides are most helpful according to the research?
Androgenic alopecia or male-pattern baldness is the most common form of hair loss in men and less commonly a cause of hair loss in women. More common causes of hair loss in women include medical conditions, such as hypothyroidism; medications including oral contraceptives; nutritional deficiencies; and physiological and emotional stresses. The causes of hair loss in elderly women may be multifactorial. Among 100 adult women with diffuse hair loss in one study, probable causes were determined to be psychological stress (30%), fever (33%), abortion and delivery (21%), trauma or surgical operations (13%), and hypothyroidism (10%). More than 50 percent of women had more than one likely cause of hair loss while a cause could not be determined in six percent.
Male and female pattern hair loss are polygenic conditions, which explains their high prevalence and variable phenotypic expression. Epigenetic modifications may alter genetic susceptibility.