The problem is that the endocrine system doesn't know what to make of many of the external variables it's introduced to. Many factors in our diet and environment — from processed foods to pesticides to lack of sleep — confuse our hormones to the point that they don't know which end is up. I call these factors endocrine disrupters because in the face of them, your hormones begin to overreact and overcompensate. And that's when trouble starts.

Endocrine disrupters can start a chain reaction: One hormone goes into overdrive and another goes into hibernation mode. That imbalance creates another, and another, and another. These dramatic hormone shifts weren't part of your body's original plan, so eventually the unpredictable fluctuations start to wear down your body's natural regulatory processes. Your endocrine system no longer understands what balance looks like. It stops responding the way it should. Your organs take a beating; your glands burn out. You develop a hypothyroid condition and/or become resistant to leptin (a satiety — or fullness — hormone) and insulin. And then you gain weight.

The good news is that you can help balance your hormones in part by changing what you put in your mouth. In my new book, Master Your Metabolism, and my online program, we're going to dig deep and remove all the toxic crap that damages your endocrine system, turns on your fat-storing hormones, and causes you to gain weight. Then we'll restore the nutrients that speak directly with your fat-burning hormones to nudge them back to their most favorable levels. Finally, we'll rebalance the energy going into and out of your body, so that your metabolism works for you as a fat-burning machine, instead of against you, storing fat and stealing energy. You can get your hormones back on track!