22 Your fat-fighting cells sometimes just give up.
Part of why it’s so hard to lose weight once you put on the pounds is that your own fat-fighting cells surrender once you reach a certain amount of weight. Specifically, the immune cells known as invariant natural killer T-cells, which monitor metabolic activity and help prevent obesity don’t increase when your weight increases. In other words, when you’re at a healthy weight, your fat-fighting cells help you stay there. But once you put on the pounds, all bets are off. To counteract that, read up on the 100 Motivational Weight-Loss Tips for Summer.
