I have HC2 on my harddrive. The dudes were IN CORRECTLY referencing how Melanin works.
Melanin is located within the skin and STIMULATED by MSH...but melanin is not secreted from the PG.
I'm a stickler for detail. Get mad if you want to.
Guess they were right, in a sense, as you are also. It may not be secreted but, it's in there. Instead of arguing, you should do research because the info is out there. Science is always learning new things, so depending on a book that may be dated is dangerous.
BTW, melanin is found all throughout the body not just the skin. Why it's there is the mystery that scientist are trying to figure out. I have a theory that it's there to help absorb some radiant heat that is made from the acitivity of metabolism, and helps keep everything in the body, in a proper homeostasis 24/7. I think some scientist have this same theory but, won't outright say it, because it can mean a lot of things that aren't good for those who suffer from lack of high melanin. To put it in simple words, the lighter you are, the worse off you can be health wise due to lack of consistency of metabolism in your body. This can manifest itself with mental disease or physical disease or both. This doesn't mean the lighter you are, you are automatically going to get sick but, it does mean you have to work much harder to stay healthy then a darker person would. The darker person would just need to move around, get as much sunlight as possible all over their body, and eat nutrient dense foods. The lighter person would have to do constant exercise, always eat proper foods, and have as less mental stress as they can have in their daily routine.
This is why I feel racism is not healthy from an evolutionary standpoint. If we know being darker is better health wise(please don't hit me with the vitamin d nonsense), why is being lighter more praised when it's a sign of weakness. Real light skin(to the point of almost being white), Blond hair, and blue eyes, is a sign that whoever has those traits can't deal with the elements well, yet we praise them when it should be the other way around. We praise straight hair, when it needs constant washing due to being high in oil, and water, or it will get dirty fast, and attract all type of things to it, while kinky hair won't, and doesn't need that much tending to. Don't get me wrong, I love all good people regardless of race but, these are facts that can't be denied. Racism, and white supremacy, is why we are thinking backwards. If people wanted the best for their child to be able to survive the earth's elements, they would be going crazy to look black but, that is far from the case. This means there is a bigger picture in the background of our world that is hiding a more sinister plan, that only the few who question may start to understand.
This can be why theories on whites from northern europe(1,000's of years ago not now) who were neanderthals or had a high amount of the genes in their dna, were more hostile then other groups who had less contact with them(including whites from france,spain, and other regions just north of Africa), as well as more prejudiced, and more of a patriarch society. My theory is the lack of strong sunlight caused them to slowly lose most of their melanin which in turn caused them to not retain heat well, which means an uneven metabolism, which meant constant stress. This internal stress caused them to see the world in a different way then other who bodies were designed in environments where they had abundance to light, and food. Michael bradley talks about this in depth since the 70's, and he was laughed at, now we see he may be right through science. BTW, he's white.
I wonder why didn't the people who lived in such harsh conditions just leave the area after a few years, and go down into other regions. They waited 1,000's of years before doing this but, by then they turned into some sinister people who had gotten real good at fighting, and trickery, so they conquered lands with no problem. I guess as humans when we are born into a situation we tend to think that is all there is until something forces us out of our situation.
http://medind.nic.in/jae/t01/i2/jaet01i2p122.pdf
Melanin Pigments in Human Pineal Gland
http://www.michaelbradley.info/books/iceman/iceman_promo.html
The Iceman Inheritance