Alnylam Pharmaceuticals Inc.’s stock jumped nearly 40% premarket on Monday after the company released results of a late-stage trial for a heart drug that analysts see competing with a key Pfizer ...

New study links marijuana use to increased risk of heart attack and stroke 04:11. With growing marijuana use across the country, studies have looked at the link between cannabis use and ...

One 2001 study suggested that heart attack risk is highest in the hour after smoking marijuana. The amount of marijuana people are using — and how much tetrahydrocannabinol, or T.H.C., is in it ...

Alnylam Pharmaceuticals Inc.'s stock (ALNY) jumped nearly 40% premarket on Monday after the company released results of a late-stage trial for a heart drug that analysts see competing with a key ...