No. Weight gain is not inevitable. Although our bodies have evolved a complex system for storing fat to fend off famines, you seldom see obesity in the wild. We may have traded in the handax for the food processor, but our genetic make-up has been the same for the last 40,000 years. We remain genetically programmed to thrive on diets of nuts, seeds, fruits, vegetables, whole grains, and other natural foods, but we gorge on doughnuts, cheese puffs, soda pop…well you probably get the picture. When we eat too much of the wrong stuff and don’t move enough that’s when we run into trouble, at any age. It is just that it gets easier to gain weight as we age because of our sedentary lifestyles and processed food diets.
Keep in mind that obesity is a New Age phenomenon. Even a few decades ago, it was rare. It remains rare in cultures where people eat and exercise more in sync with the natural rhythms of their bodies. We can avoid weight gain as we age and continue to feel vital and energetic if we feed and move our bodies in way they were programmed to be fueled and moved for 100s of 1000s of years.That means more exercise than just strolling the mall and a serious look at the diet. However, the pay-off of caring for ourselves is well worth it, with more energy, brain power, leaner and fitter body, and low risk for disease or the need for medication.