Somewhere between forty and menopause, most women start noticing changes. Stairs that once felt easy now feel arduous to climb. Bending down to pick an item feels like a chore. Hormonal levels drop. You are not imagining things—the changes are real.
As you age, a system known as mTORC1 in your body starts working overtime. Normally, mTORC1’s main job is to tell the muscles to grow and make new proteins. But with age, it focuses more on building protein and less on cleaning up damaged protein. This eventually results in an imbalance.
The research shows that certain types of exercises can reverse muscle aging by switching off a gene called DEAF1 to maintain their strength even as they age and how being inactive allows the muscles to weaken more quickly.
The Effect of the DEAF1 Gene on Aging Muscle
In the human body, muscles are constantly renovating themselves. Two important jobs are required: building new proteins and removing the damaged ones. When these two are balanced, muscles stay healthy; but with aging, there is an imbalance.
As you age, a system known as mTORC1 in your body starts working overtime. Normally, mTORC1’s main job is to tell the muscles when to grow and make new proteins. But with age, it focuses more on building protein and less on cleaning up the damaged protein. This eventually results in an imbalance.
The researchers at Duke-NUS discovered that DEAF1 plays a major role in this problem. Another group of proteins known as FOXO helps to keep DEAF1 in check. Think of it as FOXO being the supervisor and DEAF1 being the worker. Without the supervisors, the worker goes out of hand either due to confusion or the feeling of freedom. The same thing applies to this. Aging reduces FOXO activity, and this allows DEAF1 levels to rise, which pushes mTORC1 out of balance, and this causes muscle aging.
The research carried out was tested on fruit flies and mice. It showed that when DEAF1 increased, muscles became weaker, and when it decreased, muscle function improved. The older mice were made to exercise, and after the activity, the DEAF1 level dropped. mTORC1 became balanced, and muscles started repairing themselves more effectively
What Changes After You Hit the 40 Benchmark
Muscle loss doesn’t happen all of a sudden. The research carried out on women from their teens to their eighties shows that the sharpest decline in muscle strength starts in the 40s as hormonal shifts increase. There is a fall in estrogen and progesterone through the menopause transition. These hormones perform functions just beyond reproduction; they help to maintain muscle strength, support muscle repair, and preserve strength.
A study on women aged 40-50 years recorded a loss of about 21% of their strength. The DEAF1 research wasn’t specifically designed around menopause, so scientists can’t say menopause causes DEAF1 to increase. Women after 40 are dealing with two separate challenges at the same time: aging, which increases DEAF1 and contributes to muscle decline, and menopause, which causes hormone levels to fall and also contributes to muscle loss. Together, these two make muscle weakness more noticeable, and exercise appears to fight both of these problems at once. It helps preserve muscle regardless of a decrease in hormonal level and also lowers DEAF1 and improves muscle repair mechanisms.
How This Research Applies to you
It’s understandable that not every woman has the same starting point, so no one is expected to follow a fixed exercise routine. A woman in Lagos juggling a stressful job, family responsibilities, limited time, and health conditions like hypertension is different from a woman in Toronto with a gym membership, excess time, and access to fitness facilities.
But the good news is that the workouts don’t have to be intense. Even the mice used in the experiments weren’t doing marathon training—they were doing the regular treadmill work. If you can’t afford a gym, adapt exercise into your daily routine. It can be walking around your neighborhood or to a distance that you would normally board a vehicle for, dancing, or taking the stairs. The condition doesn’t have to be perfect to start.
What Kind of Exercise Should You Focus On?
Findings suggest that a combination of strength training and cardio is appropriate, as both help to lower DEAF1. Doing both is more effective than doing only one.
If you are starting from the most inactive baseline: Some of the strength exercises include squats, wall push-ups, and step-ups on a staircase. It should be done 2 times a week. The cardio should be done three times a week, and an example of the exercise is brisk walking for 20-30 mins. The goal is consistency, not intensity.
If you already exercise regularly, it’s important to do resistance training and cardio. Resistance training should be done at least three times a week, on major muscle groups in the leg, back, chest, arm, and shoulder.
Cardio should be done at least two times a week, and some of the exercises include cycling, swimming, and jogging. Each session of exercise should last at least 25 minutes or more. A combination of these exercises mirrors what the results produced in the study.
Progressive overload is also important when exercising. For example, week one, you do ten squats. Week four, you do fifteen squats. In week eight, 20 squats can be done.
Making It Work Regardless of Your Location
A workout plan can look really great on paper, but if it doesn’t fit into your schedule or reality, you probably won’t be able to keep up. The best thing to do is to create a plan you can maintain.
If you don’t have access to a gym, there are various exercise activities that can be carried out at home. There are resistance exercises like body squats, climbing stairs, and lunges. There are also cardio exercises like brisk walking around your neighborhood, walking during cooler times of the day. So a lack of a gym should not restrict your exercises.
If you do have access to a gym, it can make exercises more enjoyable. But it’s important to note that more equipment doesn’t translate into better results. What matters more is how regular you are with exercising and if you are giving the muscles reason to adapt and grow stronger.
This article is for informational purposes and does not replace personalized medical advice. Speak with your healthcare provider before starting a new exercise routine, especially if you are managing chronic conditions like hypertension or cardiac-related disease.
What the DEAF1 Research Offers
This research offers more than a new gene to memorize. it allows you to understand why exercise helps aging muscles. When you exercise, you aren’t just burning calories or sweating. You are decreasing your DEAF1 levels, improving muscle repairs and muscle cell functions.
Your 40s don’t have to become a period where your strength quietly disappears. It can become a moment where your muscles adapt and remain stronger for longer.
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Staff writer at Women Digest covering beauty, fashion, wellness and life.
