Never mind feeling betrayed about yogurt using calcium as a reason for why it makes you lose weight. It might actually do the trick now so they can drop those snake oil tactics.
According to a recent study published in the European Journal of Clinical Nutrition, one type of bacteria - LG2055 was found to be the magic bug.
One of the largest dairy companies in Japan (besides us food schizo Americans, they always find the most interesting ways to trim the fat) called Snow Brand Milk Products had 87 people drink 100 grams of fermented milk twice a day, with no other change in diet. After 12 weeks, they had lost an average of 1 kg, 4.6% of bad fat (which surround internal organs) and 3.3% of fat-fat. Hips slimmed 1.7 cm, while waist 1.5.
Now before you rush to get this stuff, the company also caused the worst case of food poisoningin Japan in 2000, where more than 14,000 people got sick from old milk and failed to recall quickly. Then in 2002, a (now-dissolved immediately post-scandal) subsidiary called Snow Brands Foods labeled Australian beef as Japanese to receive government subsidies and five execs were arrested on fraud charges.
But EJCN is a respected journal, so hopefully there's nothing to fear.