Overweight is often linked to health risks, but new research suggests it may offer unexpected benefits. Harvard University researchers found that extra pounds could protect certain women from a specific type of glaucoma.
Understanding Glaucoma
Glaucoma damages the optic nerve, typically due to elevated eye pressure, which eye drops can help manage. However, normal-tension glaucoma—where pressure is normal—remains challenging to treat and highly dangerous. Recent findings point to a potential protective factor.
Harvard scientists investigated primary open-angle glaucoma (POAG), the most common form. Their analysis revealed that higher body weight protects women against normal-tension glaucoma.
The study examined a database of 78,777 women and 41,352 men, all of European descent. No link emerged between weight and glaucoma in men, but for women, each additional BMI point correlated with a 6% lower risk of normal-tension glaucoma.
Hormonal Mechanisms
Adipose tissue may send protective hormonal signals to the retina, safeguarding the optic nerve. While a silver lining for extra pounds, researchers stress that obesity's overall harms outweigh this benefit—don't use it as an excuse to skip exercise.
Learn More Findings are published in the August issue of Ophthalmology.
