Niacin also helps blood Sugar regulation. They don't konw how but likely something to do with increasing insulin's efficiency.
For me, it's helped blood Sugar to the point I don't wake at 6am in anxiety because of low night blood sugar! Huge difference. And either because of that sleep, or because of that energy I am feeling so much better. I've mentioned before about low carb diets making me feel good - this is the exact same feeling.
Nice side effects: craving for carbs is gone. I'd like some, but don't have to fight it.
Oh and the cholesterol part? LDL, and triglycerides down by 25% or so, and HDL up by 30%.
How do you use it? Well for most of us likely at night, an hour after dinner. 100mg to start then 200 mg 2 weeks later and up to 300mg thereafter. Thing is you need to use real Niacin, as it will cause a flush for half an hour. Read up on it. I actually find it fun :)
BTW, the chromium picolinate? Too powerful for me for now. It causes blood sugar crashes if I do say 90 min of yoga. Not fun. Perhaps I can break the capsules open and use 1/4, but not til I'm done getting benefits from Niacin. That's enough for now.