You see, when you eat processed foods and sugary treats, your body’s hormones go haywire. Insulin, the hormone that regulates blood sugar, becomes elevated, leading to weight gain and an increased risk of diabetes. Leptin, the hormone that regulates appetite, becomes suppressed, making it harder for your body to tell when it’s full. And ghrelin, the hormone that stimulates hunger, becomes elevated, making it harder for you to resist those tempting treats.

So, what about “calories out?” You know, the boring, painful, sweat-inducing kind of calories. The ones that come in the form of exercise, running, and weightlifting. The problem is, hormones play a role here too. When you’re stressed, your body releases cortisol, a hormone that can lead to weight gain and muscle loss. And when you’re not getting enough sleep, your body’s levels of growth hormone and testosterone decrease, making it harder for your body to build muscle and burn fat.

In conclusion, the “calories in vs calories out” debate isn’t as simple as it seems. Hormones play a crucial role in weight loss and weight gain. So next time you’re tempted to reach for that slice of pizza, remember that it’s not just about the calories, it’s about the hormones too.

References:

1. JAMA. 2002; 288(14): 1723–1727.
2. J Clin Invest. 2005; 115(5): 1343–1351.
3. J Clin Endocrinol Metab. 2004; 89(11): 5762–5768.
4. J Clin Endocrinol Metab. 2000; 85(8): 2970–2974.
5. J Appl Physiol. 2005; 99(6): 2128–2136.