Medical experts are raising concerns after new research suggested that certain widely used weight-loss injections may be associated with an increased risk of chronic cough in some patients. The findings have led specialists to recommend adding this symptom to the list of potential warnings related to these treatments.
Drugs that belong to the GLP-1 receptor agonist class have gained global popularity in recent years. They have helped millions of people lose weight while also lowering the risk of heart attacks and strokes by around 20%.
However, as the use of these medications expands, doctors are reporting a growing number of emergency room visits linked to side effects such as severe vomiting, dehydration, gallbladder problems, and acute pancreatitis. Emerging research now suggests that chronic cough may also be associated with these drugs.
Chronic cough is defined as a cough lasting more than eight weeks and can be physically exhausting. Repeated coughing may cause chest pain due to continuous contractions of the chest wall and diaphragm muscles. The condition affects an estimated 8% to 10% of adults worldwide.
A large study analyzing health data from more than two million patients found that individuals taking GLP-1 medications were 12% to 25% more likely to develop persistent coughing compared with those using alternative second-line treatments for type 2 diabetes.
Researchers also noted that the association appeared stronger in patients without gastroesophageal reflux disease, which is a well-known cause of chronic cough. Scientists believe the drugs may trigger a different type of reflux called laryngopharyngeal reflux, where stomach contents reach the throat without the typical symptom of heartburn.
This may be linked to the mechanism of these medications, which slow stomach emptying and can sometimes allow stomach contents to move upward in the digestive tract, irritating throat tissues.
Despite the findings, researchers emphasized that the study does not prove a direct cause-and-effect relationship. Instead, it highlights a statistical association that requires further investigation.
Doctors stress that these medications still offer significant benefits for many patients, but individuals experiencing persistent coughing while using them should consult a healthcare professional.
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