Blood Flow, Barbells, and the Off-Label Question: What Men Over 45 Really Need to Know Before Asking for a Gym Prescription
More guys over 45 are asking their doctor for sildenafil not because of bedroom troubles, but because of buzz about workout blood flow. Here's what the science actually supports, where the hype runs ahead of the evidence, and how to bring it up at your next appointment without wasting anyone's time.