The video below addresses one of the reasons it is so hard to lose weight. The video is short (under 1 minute) but it covers the one biggest problem with shows TV like The Biggest Loser that most people do not know about.
Many a personal trainer will tell you that such shows like The Biggest Loser while good for entertainment should be left to just that. It is still Hollywood, where ratings count more than anything else. It is why the people who need help most get kicked out first.
For many people addressing food cravings and hormones may just what they need to finally lose fat, and keep it off. If you are considering taking leptin supplements, make sure your product of choice addresses both leptin levels and leptin resistance.