For most people, this doesn't start to slow down until around the age of 60, but it does change if your weight changes. Your metabolic rate is different from your food metabolism, which is how your body digests and absorbs nutrients from what you eat.
Metabolism in adulthood does not slow as commonly believed, study finds. Metabolic rate remains stable all through adult life, from age 20 to 60 years old.
Slower metabolism
If you're seeing weight gain in your 30s, this may well be why. As you get older, your metabolism starts slowing down - meaning you don't require as much energy to fuel yourself, despite still having a 25-year-old's appetite.
This process is called sarcopenia. Even if you're active, your body will still lose some muscle. During this time, fat will start to form instead of muscle. This also slows down your metabolism, depending on how much muscle mass you've lost.
Although the prevalence of obesity increases with age, weight gain is actually greatest across the younger years of adult life — late twenties and thirties — and diminishes gradually over time as adults get older, says Tucker.
Metabolism Is Slower Than Before
However, the slowing of metabolism still contributes to weight gain to a certain extent. In short, metabolism is a complex process in which the body converts calories into energy passively. The converted energy is then used to allow your body to function properly.
Losing weight in your 30s may be more challenging than when you were younger, but it's not impossible. It's important to have patience and make mindful, nutritious choices. This includes eating a balanced diet, getting enough sleep, drinking plenty of water, and making sure to get your body moving.
Turning 30 can be the beginning of weight-loss woes. After leaving our 20s, when it wasn't such a challenge to lose five pounds in less than 10 days, the 30s are the decade when metabolism slows and our schedules and eating habits may be dictated by the stress of a career, marriage or family.
A slow metabolism has many symptoms, and you're likely to have one if you find it difficult to lose weight and easy to gain weight. Other symptoms include fatigue, poor digestion, constipation, low mood, and a colder than average body temperature. All of these are caused by the lower production of energy and heat.
That is, metabolic rate is thought to be inversely proportional to maximum lifespan, which means that species that live fast will die young while those that have a slower metabolic rate live slower and longer.
Fat-burning ingredients like protein, spicy peppers and green tea have been proven to bump up metabolism. Eat some form of these foods, especially protein, at every meal. Protein is especially important: It takes more calories to digest than other foods and also helps the body build fat-burning lean muscle tissue.
As we reach our 30's, our bodies usually need less energy, meaning we may not be able to eat the way we did in our 20's. Then, as you move past 40 and head to middle age, changes in muscle, hormones and metabolism all make it harder to stay trim. But it's not a lost cause.
So, is it ever too late for weight loss? Short answer; nope. A longitudinal Dutch study5 investigated the reasons behind a worrying trend researchers had noticed — that weight loss in old age was associated with an increased risk of. Obviously, that sounds pretty terrible on the face of it.
Fuel your body with protein and water
That is because protein causes the largest rise in TEF, increasing your overall metabolic rate by 15% to 30%. Eating protein is also essential for building and repairing muscle, which – as established above – boosts your metabolism.
Our metabolism slows down as we age.
"Our bodies don't process and metabolize food the same way,” she says. “And until you are in your late 60s, early 70s, it is a little bit harder to lose weight.
With the onset of puberty, the male pelvis remains on the same developmental trajectory, while the female pelvis develops in an entirely new direction, becoming wider and reaching its full width around the age of 25-30 years. From the age of 40 onward, the female pelvis then begins to narrow again.