Brief Answer:
Growth is multifactoral
Detailed Answer:
Hi XXXXXXX Thanks for coming to HealthCareMagic
This is an interesting question. I will try and cut through the genetics and the obvious stuff and start with something i am sure you are aware of. When it comes to ones actual PHYLOTYPE (the actual physical manifestation of a person), there are many factors at play, one of which is our
GENOTYPE (the mixture of genes inherited from our parents).
There are many other factors at play here as well, including
hormonal exposure, age weight and random
mutation.
When doctors say that Penis size is genetically determined, they are basically oversimplifying the issue (when you look at large populations, you have to control for other factors, like hormonal issues and general nutrition otherwise the results will be useless).
So, why would two siblings have different sizes? Depends on which genes they inherited from mom and dad. It also depends on who is more physically active (the fatter you are in childhood, the smaller it will be at adulthood) and how much extra weight you have on you and around the abdomen (the shaft of the penis gets buried in abdominal fat, so
weight loss around the abdomen automatically makes the organ longer). It also depends on a host of other issues (was one sibling exposed to alot of
estrogen like chemicals in the preservative and antibiotics of the the meat that they eat, does one of them have
thyroid or sugar issues, have they eaten a healthy high protein diet).
So all in all. Genetics is certainly one factor but not the only one.
As far as
penile implants and lengthening go. There are cosmetic devices that can be implanted for men, but i am not aware of any surgeon currently doing this in India. Why they don't is probably that there is not much of a market for the surgery and the liability is enormous.
As far as size not mattering. i think you need to understand that your sexual relationship with a woman is more complicated than the basic issue of friction and size. Women achieve orgasm through higher hormonal levels which are determined less by physical stimulation and more by emotional closeness to their partner. So if you are worried about your partners enjoyment of the experience. A close and intimate relationship, trust and true enjoyment of each others company will go much further in her achievement of the orgasm.
Size doesn't matter to most of the women that i have spoken to and the women who it did matter so much for where not women that I could enjoy the company of.
Don't let your manhood get wrapped up in one single organ on your body. There is much more to being a man than just that.
Ok. I will stop now before I get any more preachy. I hope this helps. Feel free to follow-up. Thanks again for coming to HealthCareMagic