Modern medicine has made great progress in helping people manage weight and blood sugar. New drugs such as semaglutide and tirzepatide are now commonly used to treat type 2 diabetes and obesity.
These medications help reduce appetite and support steady weight loss, which can lower the risk of heart disease and other serious conditions.
But a new study from the UNC School of Medicine suggests that these treatments may also have an unexpected effect. According to research published in Annals of Internal Medicine, people taking these medications may lose more muscle than expected during weight loss.
At first glance, losing weight is usually seen as a positive outcome. However, the type of weight lost is just as important as the amount. The body needs muscle to stay strong, maintain balance, and support daily activities such as walking and climbing stairs.
When muscle is lost, people may feel weaker and less stable. Over time, this can affect independence, especially in older adults. It may also increase the risk of falls, which can lead to serious injuries.
The research team reviewed results from many clinical studies that examined incretin-based medications. These drugs work by copying natural hormones that help control hunger and blood sugar levels. As a result, people tend to eat less and gradually lose weight.
The researchers found that muscle loss was a consistent part of the weight loss process in these studies. While some muscle loss is normal, the proportion seen here was higher than what experts usually expect. This means that a significant part of the weight being lost may not be fat.
This discovery raises important questions about how these medications should be used, especially for certain groups of people. One major concern is the lack of data on older adults. Most studies have focused on younger populations, leaving a gap in understanding how these drugs affect people over 60 or 65.
As people age, they naturally lose muscle mass. This condition, sometimes called age-related muscle loss, can already affect strength and mobility. If medications add to this loss, the impact could be more serious.
Because of this, the researchers suggest that future studies should include more older participants. They also recommend looking beyond weight loss alone and focusing on physical function, movement, and quality of life.
Doctors may also need to change how they monitor patients using these medications. Instead of only checking body weight, they could track muscle mass or strength over time. This would give a clearer picture of how the body is changing.
There are practical steps that may help protect muscle during weight loss. Physical exercise, especially activities that build strength, can make a big difference. Eating a balanced diet with enough protein is also important to support muscle health.
It is important to note that these medications still offer strong benefits. They can help control blood sugar and reduce the risk of serious health problems. The goal is not to stop using them, but to use them more carefully and wisely.
This study adds an important piece to the growing understanding of how weight loss treatments affect the body. It shows that successful treatment should not only focus on losing weight but also on maintaining strength and function.
In the future, researchers hope to find ways to improve these treatments so that patients can lose fat while keeping their muscle. Until then, careful monitoring and a balanced approach to health will be key.
If you care about weight loss, please read studies that hop extract could reduce belly fat in overweight people, and early time-restricted eating could help lose weight .
For more health information, please see recent studies that Mediterranean diet can reduce belly fat much better, and Keto diet could help control body weight and blood sugar in diabetes.
Source: University of North Carolina.
