DammitLetMeIn said:
docj077 said:
DammitLetMeIn said:
I'm not going to get too lost in the science. There appears to be a wealth of information suggesting that increased 5 alpha reductase/DHT is linked to baldness. You don't agree.
There appears to be enough information to suggest that increased cholesterol is also linked to baldness. you proabably dont agree.
You probably dont agree that rural japanese have less male pattern baldness than urban japanese and american japanese.
There is also information form actual patients that decreased DHT levels can be associated with hair loss, as well.
I have not read anything that suggests that increased cholesterol is associated specificially with hair loss. There are numerous diseases associated with hair loss. High cholesterol can be associated with increased hormone synthesis and increased DHT levels. High cholesterol can also be associated with arterial disease. High cholesterol on it's own in the body does not directly impact hair loss in any way.
As for the Japanese, the Westernization of their diet has also led to certain urban meals being left out of their urban and American diets. You can't just assume that they've suddenly gained a single factor when they Westernized their diets and that's the bulk of their problem. The Japanese diet was once filled with soy products and phytoestrogens. However, the Westernization of their diet has led to a decrease in many of these products. It's not surprising that male pattern baldness is occurring in a population that is no longer protected by their diet.
I think its safe to say that 'increased DHT levels is much more commonly associated with hair loss and baldness than 'decreased'.
But you said in your earlier post that baldness isn't caused by DHT and now you are saying that soy protected the Japanese when we all know that 5-alpha reductase inibited by soy.
Make up your mind. In ur opinion does increased 5 alpha reductase/DHT cause baldness in genetically susceptiable individuals?
It doesn't matter what your levels of DHT are until they fall below a certain threshold that decreases cellular signaling enough to allow hair regrowth or growth.
DHT is the initial step in hair loss, but it's not the cause. Downstream mediators that are increased due to DHT's binding of the androgen receptors are what causes hair loss. TGF-beta specifically.
Smad-7 has also been shown to increase secondary to increased TGF-beta. Smad-7 downregulates the TGF-beta receptor while also appearing to encourage the cellular transition to sebaceous glands.
Microscopically, prolonged lack of treatment for male pattern baldness causes perifollicular fibrosis secondary to increased collagen deposition (TGF-beta mediated), the movement of the hair follicle from the dermis into the epidermis causing poor nutrition and miniaturization, and increased sebaceous gland creation (Smad-7 mediated apparently).
The science of hair loss has moved beyond simple dietary considerations. The human body makes cholesterol, so even if you remove all of it from your diet, you'll still have some in your blood. It's absolutely required for sex hormone synthesis and cell membrane maintenance. You can not and should not remove all cholesterol from your diet. With regards to fatty acids, you can remove those, as well, but they don't cause hair loss. The last time I had a lipid panel performed on me, my LDL was 100 and my triglycerides were 35. Both values are quite good and I have a receding hairline, so that pretty much rules out diet. As for my blood sugar, that was 80, which is excellent and demonstrates well controlled insulin levels.
So, it's not insulin, it's not cholesterol, and it's not fat. There are people here who are strict vegans with hair loss, so you need to find a better theory.