PSY 402 Chapter Notes - Chapter 4: Late-Onset Hypogonadism, Eardrum, Sleep Deprivation
11 Nov 2015
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Thinning of hair occurs more visibly in men but affects both sexes. Hair loss results from destruction of germination centres that produce hair in the hair follicles. Most common form of hair loss with incr. age is male and female pattern hair loss : conditions affects, to some degree, 95% of adult men and 20% of adult women androgenetic alopecia. Lean tissue or fat-free mass (ffm) decr. Countering this decr. is an incr. in bmi an index of body fat. Overall pattern of body weight shows upside down u-shaped trend by age: most people incr. weight from their 20s until mid-50s, after which they lose those added. Much of the impact of aging on body build and composition can be offset by exercise pounds. Cardiovascular decr. in aerobic capacity of 1%/year. Walls of left ventricle of heart loses ability to contract enough to accomplish ef cient. Arteries accommodate less blood ow, which in turn further stresses left ventricle.
