Skin aging in men and women
The processes of aging differ in male and female skin.
In men, there is a gradual thinning of male
skin with increasing age of approximately 1% per year. On the other
hand the thickness of most women's skins remains surprisingly constant
until the menopause, after which there is a significant and sometimes
dramatic thinning with increasing age.
There is a relationship between skin thickness
and collagen content in men of all ages. A similar relationship exists
among women over 60 years of age, but it is less evident in younger
women.
In adult skin, the features of aging are
closely related to the total collagen content, which in both sexes
decreases with increasing age, but at different rates. In later life
women may look |
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older than men of the same age and similar
experience of sun exposure, partly because their skin has a lower
collagen content to start with. Another reason for the gender difference
in skin collagen content may be the difference in male hormone production
between men and women.
In women, estrogen and androgen output from
the ovaries and adrenal glands falls after menopause, resulting in
decreased collagen synthesis and repair.
Aging related to the failure of estrogen
production at the menopause accentuates intrinsic aging, and together
with photoaging may dramatically increase the apparent age of a menopausal
woman.
Estrogen deficiency particularly affects
the fibroblasts of the dermis, and thinning of the skin is primarily
related to a decrease in the production of collagen. This decrease
is related |