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Nov
21
comment Do adipose cells divide in adults?
The Wikipedia entry for Adipocyte has a whole section on cell turnover. "If excess weight is gained as an adult, fat cells increase in size about fourfold before dividing and increasing the absolute number of fat cells present." citation
Nov
20
comment What is the armpit hair for?
Yep! Is there a way to invite specific users, though?
Nov
17
comment What is the armpit hair for?
@rg255 I wish there were a more direct way of speaking on SE, I wanted to tell you I was intrigued by your profile. Where on here could we address science policy, psych. of interdisciplinary science, etc.?
Nov
17
comment What is the armpit hair for?
@rg255 Well, of course, but that is only the mechanism by which the exhibition of the trait is controlled--and while more efficient control mechanisms for the "fittest" traits are certainly "weeded out", they do not dictate which traits are the "fittest".
Nov
17
comment What is the armpit hair for?
@rg255 To speculate further, it is possible that men on average have more body hair because they on average have a lower body fat percentage, leaving them more exposed. This could also explain the high prevalence of limb hair in both sexes: limbs and their appendages (fingers, toes) are farther away from the heart, and therefore more vulnerable to the cold.
Nov
17
comment What is the armpit hair for?
@rg255 Hair was probably retained in the most sensitive areas: the pubic area, the armpits, and outside various openings and membranes such as the eyes, ears, and mouth.