HealthWhy we know so little about cannabis – and why scientists are worried While research on marijuana has surged in the last 20 years, our understanding of the drug is decades behind that of other substances, like tobacco and alcohol ¿ìè¶ÌÊÓÆµ
HealthAspirin raises the risk of brain bleeds and may not prevent strokes Doctors sometimes recommend older people take a low dose of aspirin to reduce their risk of the most common type of stroke, but a study suggests this is no more effective than a placebo and raises the risk of brain bleeds ¿ìè¶ÌÊÓÆµ