What Causes a Stroke?
A stroke happens when blood flow to part of the brain is blocked or when a blood vessel in the brain bursts. Without oxygen-rich blood, brain cells begin to die within minutes.
Semaglutide and Vision Problems: What the Latest Research Reveals
Could a popular diabetes and weight-loss drug affect your vision? A new 2025 study in BMC Medicine examined whether semaglutide—sold under the names Ozempic, Wegovy, and Rybelsus—is associated with vision problems like optic nerve damage and diabetic retinopathy. Researchers analyzed over 300,000 FDA safety reports to look for patterns that could impact patients already at risk.
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