A recent article in Pharmacy Times gives some more information about the kinds of things that affect obesity.
Researchers found that less air may mean a bigger spare tire. Decreased lung function (meaning less air to the body) had a direct effect on metabolic syndrome, which is largely credited to abdominal obesity. This connection was found to be independent of smoking and drinking.
They also found that White Tea is showing promise for combating fat, even moreso than green tea. It stimulates fat mobolization as well as inhibiting the generation of new fat cells.
And, increasing calcium can aid weight loss. Upping your intake of calcium (if you lack calcium) do daily recommendations can help prevent hunger. Women on a low-calorie diet taking calcium lost close to 13 pounds (over 15 weeks) versus women who did not take calcium (or took the placebo), who lost only about 2 pounds. They hypothesize that your brain detects calcium deficiencies and stimulates your body to feed itself to get more calcium!

