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Some researches shows gross measures of body strength suggest that females are approximately 50-60% as strong as males in the upper body, and 60-70% as strong in the lower body. [31] One study of muscle strength in the elbows and knees—in 45 and older males and females—found the strength of females to range from 42 to 63% of male strength. [32]
Androgens are synthesized in the testes, the ovaries, and the adrenal glands. Androgens increase in both males and females during puberty. [3] The major androgen in males is testosterone. [4] Dihydrotestosterone (DHT) and androstenedione are of equal importance in male development. [4] DHT in utero causes differentiation of the penis, scrotum ...
The embryo and subsequent early fetus appear to be sexually indifferent, looking neither like a male or a female. Over the next several weeks, hormones are produced that cause undifferentiated tissue to transform into either male or female reproductive organs. This process is called sexual differentiation.
More specifically, androgenetic alopecia is caused by a genetic sensitivity to an androgen called DHT. Your body creates DHT as a byproduct of testosterone, the main androgen hormone in the male ...
Randall said white men and women are hairier than Japanese men and women even with the same total plasma androgen levels. [23] Randall says that the reason for some people being hairy and some people not being hairy is unclear, but that it probably is related to differing sensitivity of hair follicles to 5α-reductase. [23]
Nall says men tend to hit their hormonal peak in their 30s. After 40, testosterone starts to drop. “Then, it takes a pretty big dive around age 50 and starts to go down,” he adds.
Testosterone is the primary male sex hormone and androgen in males. [3] In humans, testosterone plays a key role in the development of male reproductive tissues such as testicles and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.
Pattern hair loss (also known as androgenetic alopecia (AGA) [1]) is a hair loss condition that primarily affects the top and front of the scalp. [2] [3] In male-pattern hair loss (MPHL), the hair loss typically presents itself as either a receding front hairline, loss of hair on the crown and vertex of the scalp, or a combination of both.