Worried about proving yourself as manly as can be? Well, the bet way to do that may be to have fraternal twins. Danish researchers found that fathers of dizygotic twins had higher-quality sperm
than did fathers of single-births. They also found the same to be true of fathers of monozygotic twins, which makes very little sense, so I am not sure I really buy this study. However, it was fun to say.
Canadian researchers have found that mice with an induced MS-like syndrome recover some of their myelin when pregnant, due to prolactin
. If this finding can be translated safely into a drug regiment for humans, it could really improve the lives of MS sufferers, who currently have few real treatment options. Plus, why does prolactin have this effect? That's really cool!
Labels: manliness, MS, myelin, neuroscience, pregnancy, prolactin, sperm, twins