A friend wrote, while studying for the master’s degree in medicine:
During the process of aging, men's brain cells die faster than women's brain cells. Very thankful I read that tonight while studying; just knowing this information makes my Master's degree worth it!
She continued:
Here's the scientific reason; Hyper-activated mTOR (Target of Rapamycin).Cellular growth and hypertrophy are stimulated by the mTOR intracellular signaling pathway. 
Insulin, growth factors, amino acids, glucose lipoproteins, and testosterone all activate the mTOR pathway. Hyper-activation of mTOR may provide an advantage (muscle hypertrophy, high levels of testosterone and high spermatogenesis) in early life at the cost of accelerated aging later in life.
[ Several of her women friends made comments about “men’s brain cells”, which I won’t mention here. ]
My perspective and response was”
Wow, thanks, and here I was in total state of bliss not knowing any of this. I feel so much better now (with a sarcastic grim, scratching my head) . However, now I feeling less guilty of blaming it all on getting old! So I do feel better. I already use the three main excesses for having no memory... 1. hey, I'm a guy ( we are programmed to remember only what's important to us... the rest is extremely hard). 2. I'm married ( need I say more), and 3. ha,haha, ha,ha... I'm old, and shouldn't be expected to remember anything. 
Then I do my best Forrest Gump voice, and all is forgiven... or at least the expectations are much lower. Works every time! And I go on my merry way... life is sweet!
… and you just follow the white feather, blowing in the breeze!
