Many medical treatments developed for one purpose are now showing surprising benefits in other areas of health. A prime example is the shingles vaccine, long recommended for adults over 50. New research presented at the European Society of Cardiology reveals the vaccine may do more than prevent shingles—it could reduce the risk of heart attacks, strokes, and other cardiovascular events by nearly 20%. Hormone replacement therapy (HRT), widely used by menopausal women to ease symptoms like hot flashes and night sweats, is also gaining attention for its cognitive benefits. Researchers have found that HRT may improve memory function, including both long-term recall and short-term memory, helping women remember tasks such as appointments and medications. These findings highlight a growing trend in medicine: drug repurposing. According to the journal IntechOpen, many drugs have shown unexpected benefits beyond their original use. Minoxidil, initially developed to treat high blood pressure, is now commonly used for hair loss. Atomoxetine, once intended for Parkinson’s disease, is now prescribed for ADHD. More recently, GLP-1 drugs, designed for type 2 diabetes, have become widely recognized for their effectiveness in weight loss. These discoveries underscore the evolving nature of medical science, where treatments often deliver more than their original promise.