Leptin is the single most important hormone that regulates your body weight. It is the boss of thyroid hormone, insulin, growth hormone, and adrenal hormones (like cortisol). Understanding leptin and working in harmony with it opens an entire new world of possibilities to maintain and attain optimal metabolic function.

Leptin is known as the fat hormone because it is made in your white adipose tissue, or stored fat. Following a meal leptin is released from your fat, enters your blood, and travels to your brain. It delivers a message that you are full and also lets your subconscious brain know how much fuel you have on hand (like the ...