Why We Gain Weight As We Age & What To Do About It
You exercise a couple of times a week, cut out fast food completely, ditched the soda habit altogether and yet, with each passing year, a few extra pounds find their way onto your belly. What gives? Ten years ago you could eat whatever you wanted (within reason) and never think twice about it. It's unfair, I know, but it's time to get over the unfairness and understand what's behind this gradual weight gain so you can do something about it.
Why do so many people gain weight as they age?
In fact, one recent
study showed the average 10-year weight gain was around 5 lbs. A total of 51% of the participants gained 5% or more body weight, 36% gained 10% or more, and 16% gained 20% or more across the 10-years. Yikes!
Why is this? Well, biologically, there are some interesting changes happening with each passing year. These four changes in your body can help explain where those extra pounds are coming from.
- One recent study showed how lipid fat turnover decreased with aging, meaning more fat gets stored than removed.
- Lean muscle mass declines at a rate of 3-8% starting in our 30's. This muscle mass is often replaced with increased fat.
- Hormones like testosterone and estrogen naturally decline as we age. Both of these sex hormones influence weight regulation via muscle mass, metabolism and fat distribution.
- Many factors influence metabolism such as gender, lean muscle mass, stress levels, lifestyle changes, etc. As we age, these factors generally trend in the negative direction meaning our metabolism slows. For example, working a stressful 10-hour-a-day desk job negatively impacts metabolism from multiple fronts. Increased stress means chronically elevated levels of cortisol which leads to increased fat storage compounded with a sedentary lifestyle. Voila', you have the perfect recipe for weight gain.
Is weight gain as we age inevitable?
Absolutely not, but it is a given that you will have to put in some serious effort to maintain your weight as you get older. Try the following lifestyle changes to help you get to your ideal weight and stay there through the years.
- Exercise (the kind that increases your heart rate for an extended period of time). More physical activity is key to maintaining a healthy body weight and keeping those extra pounds at bay as you age. Not only do you need to exercise regularly (most days of the week), but get used to the idea that you will probably need to do more than you've been doing. Look for every opportunity to be active from wearing a step tracker to motivate your daily steps to exercise "snacks" (a term for short exercise bouts) at work. House projects and yard work are a great way to increase daily activity.
- Strength Training. One of the primary reasons people gain weight as they age is adopting a sedentary lifestyle. When coupled with the natural decrease in lean muscle mass, the result is always extra pounds which then feeds the cycle of weight gain. Strength training to increase lean muscle mass is the way to combat this. Aim for 2-3 strength training sessions a week. Low on time? Do a few HIIT (high intensity interval training) sessions a week to maximize your time (or lack thereof).
- Increase your consumption of high volume/low calorie foods. What types of foods are these exactly? Fruits and vegetables, of course. Aim for 5+ servings every single day. When you are eating this many fruits and veggies daily, there is less room for junk food.
- Add protein to every meal and snack. Amp up your fiber. Both of these will help you stay full and are strategies to decrease your calorie consumption.
- Swear off refined carbohydrates and processed foods.
- Cook and eat at home.
- Sleep!
Exercise is man's best medicine
--Hippocrates
Nutritious Foundations









