Cayenne is very VERY good for you as you've heard, and it is really good for your heart. Also I've heard of when people sliced themselves open with a chain saw or something like an axe or an accidental hunting accident they took a teaspoon of cayenne oil or hot cayenne(there is a huge difference) oil and it made the bleeding stop to the point where the docs almost didn't have to do anything to help them at all. They either (ouch!) poured it on the wound, or swallowed it. Eesh! I had some (used it up need some more) that I would take a drop of the hot cayenne (which is the super strength) in an 8-ounce cup of anything. I had carrot juice, but you can use anything you want or take it straight under your tongue. You build up to the heat after a while. I think I was taking 5 drops to 8 oz of lizquid.
I've even heard that if you sprinkle some cayenne powder in some Apple cider vinegar and apply it to your head 20 min or so before washing your hair that it will stimulate hair growth. I think it did help my hair to stop falling out after I had my baby. You can find more info at
http://www.drchristophers.com I think that url is right. I apologize if it's not, and will get the right one for you. That's the brand of cayenne oil my natural doctor (awesome, actually an md, but wouldn't do all of the stuff they taught him in medical school because it's so harmful, so only uses natural stuff that works way better than any prescription drug and with no side affects) told us about, and lots of people in our church use it.
I don't know anything about it helping with weight loss, but it sure might. pm me or post on here if there is anything else I can help you with. Oh also it helped me with horrible breast pain with this preg. I applied one drop to a hot wet wash cloth and used it as a compress, and the pain was gone in 24 hours. It had been excrutiating for a long time before then. Okay, hope this helps!