Wider capillaries = more blood flow to the skin = healthy skin
Niacin also plays a role in liver function and aids the liver in metabolizing toxins. Here is some more info on Niacin
Niacin opens blood vessels wider. Niacin, when used properly, offers benefits in terms of cholesterol reduction, as well as for detoxification. People with high cholesterol levels should see improvements once their follow the proper diet of raw foods, preferably through a good juicing program, along with the proper healing fats in their diet. However for people who don't respond, it would seem that niacin would be a far safer and less expensive alternative to the statin drugs, which have their serious complications.
Niacin is a water-soluble B vitamin – vitamin B3 - and the common name for 2 very different compounds: "nicotinic acid" and "niacinamide". High doses of niacin (as nicotinic acid) can lower cholesterol levels (although the exact mechanism of action is still not known). The other form of niacin (nicotinamide or niacinamide) does not open blood vessels wider nor provide a cholesterol-lowering effect.
Niacin and detoxification of fatty tissues
There are many 'detoxification programs' on the internet, but few of them acknowledge the significant fact that many toxins are stored in FATTY TISSUES. Until that fact is acknowledged, one can not develop a procedure for removing toxins from THAT location.
niacin and fatty tissue
Until the Ron Hubbard purification program was developed, no one had even yet recognized that these oil soluble toxins had such long-term effects in the body.
An important characteristic of the Hubbard detoxification program is the use of niacin. Niacin has the well-known effect of causing "vasodilation", often called the niacin flush, which is an opening of the small blood vessels, the capillaries, so that more blood flows through them. These are the blood vessels which are of most value in reaching fatty tissues. In this way the toxins which are stored in these fatty tissues can be removed, into the bloodstream, and processed out of the body. However, niacin is also made in the form of niacinamide - a form of vitamin B3 which, deliberately, is manufactured so that it will NOT cause dilation of the blood vessels - the flush so well known when using plain niacin. A detoxification program which features the use of niacinamide and also claims to improve blood circulation would be based on false science.
Some detoxification programs don't even recognize that the toxins they claim to be removing are stored in fatty tissues. The idea of removing these toxins by some procedure which does not include niacin is not practical.
The niacin "flush"
It's important to note that this niacin flush is not harmful or dangerous. Some people worry about it, but it is actually a sign of improved blood flow.
When you get the niacin "flush", it's an indication that the niacin is causing small blood vessels in your body to be expanded in size. Many of your small blood vessels, called "capilaries" are so small that blood cells can only go through them in single file. Sometimes, in fact, that small capilary passageway is clogged and blood doesn't get through at all.
niacin and capillaries
While the large organs of the body all have blood supplied from large arteries, a great deal of your body, particularly the parts near the skin, get their ONLY supply of blood (therefore also of oxygen and nutrients) from these small capillaries.
The niacin causes these small capilaries to expand - so they might be able to carry 2 or 3 blood cells at the same time. This is a tremendous increase in blood flow.
You experience this as a "flushing" of the skin, simply because there is more blood close to the surface of the body. As the blood flows in these areas, the cells of the small capilaries will also be getting rid of their waste products, and often they produce 'histamine' as part of this process. That histamine is another natural substance produced by every cell in the body when a cell is under attack, or is eliminating toxins. Histamine causes an 'itchy' feeling.
If anyone wants to start taking niacin DO NOT GET THE NON FLUSHING KIND (niacinimide). You want the flush because it means that your widening your capillaries. Niacinimide will not widen your capillaries and you probably wont get results. Also don't buy the time released ones either. I just went to my local grocery store and bought 500mg tablets of Niacin for 5 dollars, its really cheap. When you start your gonna wanna take 100mg for 3 days, then 200-300mg for another 3 days, and then try taking 400-500mg. When you get to the higher doses you'll definitely experience the flush. If you're wondering what the flush feels like, it feels like nice hot sunburn all over your body with a little bit of tingly itchiness. Usually i can feel blood rushing to my head and it may get pretty intense. You just gotta do something (i play guitar) to keep your mind off of things for 30-60 minutes.
I definitely think more people should be trying Niacin because its a very cheap supplement with good results and it doesn't require a strict diet at all. Right now I'm also taking 50mg of zinc and fish oil but I've been doing that for months and I haven't had good results since taking niacin.