“Obesity incidence starts increasing in one's twenties and peaks at 40 to 59, and then decreases slightly after age 60,” says Craig Primack, MD, an obesity medicine physician at the Scottsdale Weight Loss Center in Arizona.
Those extra pounds were packed on in early adulthood: The average American gained about 17.6 pounds from their mid-20s to mid-30s, the study found. Meanwhile, the average person gained about 14.3 pounds between their 30s and 40s, 9.5 pounds between their 40s and 50s, and 4.6 pounds between their 50s and 60s.
As you age, your muscle mass decreases and your fat mass increases. Fat is less metabolically active than muscle—you don't need as many calories to maintain fat as you do to maintain muscle. Hormonal changes can also lead to weight gain.
Conversely, losing weight in your 30s and 40s is more difficult than when you're a young adult. (Men and women tend to put on little or no weight after age 40 and lose weight in their 70s, according to HHS.)
According to the study by supplement company Forza, turning 30 is the biggest inspiration for both men and women to lose weight.
Men often gain weight until about age 55, and then begin to lose weight later in life. This may be related to a drop in the male sex hormone testosterone. Women usually gain weight until age 65, and then begin to lose weight.
As you get older, you start to lose lean body mass like muscle and bone density. As early as age 30, our lean body mass starts to drop by a little over half a pound each year. You might not notice a change when you step on the scale, because the lean weight you lost is often replaced by fat.
Mostly, losing weight is an internal process. You will first lose hard fat that surrounds your organs like liver, kidneys and then you will start to lose soft fat like waistline and thigh fat. The fat loss from around the organs makes you leaner and stronger.
There are many reasons you can gain weight that have nothing to do with food. Sometimes weight gain is easy to figure out. If you've changed your eating habits, added more dessert or processed foods, or have been spending more time on the couch than usual, you can typically blame those reasons if you gain a few pounds.
Further to increasing the onset of metabolic imbalances, obesity leads to reduced life span and affects cellular and molecular processes in a fashion resembling aging.
Many women also notice an increase in belly fat as they get older — even if they aren't gaining weight. This is likely due to a decreasing level of estrogen, which appears to influence where fat is distributed in the body.
The rate of increase starts to slow in the 30s and 40s, and plateaus in your 50s. After that, the average weight falls. The kids are out of the house and your career is hopefully in order, freeing up more time to take care of yourself. But there are other factors at work at this end of the weight-age spectrum.
A combination of things happens as we age. We tend to lose muscle mass, so our abdominal muscles aren't as tight as they once were, and the loss of elastin and collagen in our skin allows gravity to have its way so skin starts to sag. Both can cause the waistline to expand.
Weight gain is common as we age. As you move through your 20s on to your 30s, you may notice subtle changes in your waistline, and an increasing tendency to gain weight. We should however be mindful that metabolic rate does change as we get older because of the decline in our muscle mass.
Over time, studies have shown that metabolic rate (how fast we burn calories) starts to slow down by 2 to 3 percent each decade, beginning in our 20s. It becomes more noticeable between ages 40 and 60.
One of the primary reasons losing weight is harder to do as you grow older is due to a slowing metabolism. It is estimated that your metabolism slows down 5% every decade after you turn 40. This can occur because of the loss of muscle (or sarcopenia) which plays a crucial part in maintaining your metabolism.
Water can be really helpful for weight loss. It is 100% calorie-free, helps you burn more calories and may even suppress your appetite if consumed before meals. The benefits are even greater when you replace sugary beverages with water. It is a very easy way to cut back on sugar and calories.
Body-weight loss is usually noticed around the belly, waistline, and thighs first. This is because your body stores fat in different locations. For instance, men hold more fat around their belly, while women store it on their thighs and hips. Weight loss gradually starts with a reduction in belly size.
Most people begin to notice a shift in the appearance of their face around their 40's and 50's, with some also noticing a change in their 30's. But with these physical changes brought on by aging also comes a change in the appearance of our face - Luckily, there is treatment available.
For example, aerobic capacity declined 3% to 6% each decade in the 20s and 30s, but after age 70 the rate of decline accelerated to more than 20% per decade. The study also showed that after age 40, men's fitness levels declined at a faster rate than women, regardless of their level of physical activity.
Have you ever noticed that people have thinner arms and legs as they get older? As we age it becomes harder to keep our muscles healthy. They get smaller, which decreases strength and increases the likelihood of falls and fractures. New research is showing how this happens — and what to do about it.