Obesity has become one of the world’s biggest health challenges. Carrying too much body fat increases the risk of type 2 diabetes, heart disease, stroke, arthritis, and many other illnesses.
For many older adults, losing weight can improve movement, reduce pain, and increase quality of life. New GLP-1 medicines have made large weight loss possible for many people, and a new Medicare GLP-1 Bridge program aims to make these medicines easier to access.
While these drugs offer major health benefits, researchers from Wake Forest University believe patients should also understand another side of the story. Their expert advisory, published in the American Journal of Lifestyle Medicine, explains that rapid weight loss may speed up the loss of bone and muscle, particularly in older adults.
As people age, bone strength naturally declines. The body slowly removes old bone faster than it builds new bone. This can lead to osteoporosis, making bones thin and easy to break. Broken hips are especially serious because they often reduce mobility and independence and may even increase the risk of death in older adults.
Kristen Beavers, who studies aging and body composition, says this issue deserves attention because millions of older Americans live with obesity. As GLP-1 medicines become more common, protecting bone health should become a routine part of obesity treatment.
Weight loss provides many important benefits. It lowers blood sugar, reduces stress on the knees and hips, improves heart health, and helps many people become more active. However, whenever people lose weight, they usually lose some muscle and bone along with body fat. Faster and greater weight loss may increase these losses.
Research on semaglutide showed that participants lost around one-tenth of their body weight while also losing about 2.5% of their bone. Traditional weight loss through healthy eating and exercise usually results in slightly less bone loss. Although scientists still need more studies, these findings suggest that rapid weight loss deserves careful medical supervision.
Researchers are especially interested in the newest GLP-1 medicines because some patients lose as much weight as people who undergo bariatric surgery. If body weight falls dramatically, bone strength may also decline unless steps are taken to protect it.
The advisory also points to information from the SELECT trial used in Wegovy’s prescribing information. Women taking the medicine experienced more fractures of the hip and pelvis than women receiving a placebo, with the highest rates seen in adults aged 75 years and older. These findings do not mean everyone will experience fractures, but they highlight a possible risk that doctors should discuss with patients.
Experts recommend a complete approach instead of relying on medicine alone. They advise checking bone density before treatment, encouraging resistance exercise, eating enough protein, calcium, and vitamin D, and closely monitoring people who already have osteoporosis or a history of broken bones.
Lifestyle support should remain an essential part of treatment because medication alone cannot maintain healthy muscles and bones.
Wake Forest researchers are continuing this work through a National Institutes of Health grant that will study the balance between the benefits and risks of GLP-1 medicines in older adults.
This advisory provides balanced guidance by recognizing both the impressive benefits and the possible risks of GLP-1 medicines. It does not suggest that people should avoid these drugs.
Instead, it highlights the importance of personalized care. Because the available evidence is still developing, future long-term studies will be essential to determine how much bone loss occurs and which strategies best prevent fractures while allowing patients to achieve healthy weight loss.
If you care about bone health, please read studies that plant-based diets can harm your bone health without these nutrients, and how to ease arthritis with anti-inflammatory foods.
For more health information, please see recent studies that too much of this vitamin may increase your risk of bone fractures, and results showing this type of exercise may protect your bone health, slow down bone aging.
Source: Wake Forest University.
