A decision on this matter was expected in July but the EU referendum may have changed this and it could be a longer wait than previously expected. Investors with long positions on stocks, commodities and more can hedge against a drop in the underlying price by taking out a put option.
How are options priced?
There are a few that appear to be mildly effective. This includes Caffeine, Green Tea and Glucomannan (a fiber that can reduce appetite). However, the results are usually weak and inconsistent and certainly nothing to get excited about.
At the end of the day, the only thing that is really proven to help you lose weight is changing your diet. Exercise can help too, but what you eat is by far the most important.