MaryJo Perry raises animals on her property outside of Jackson, Miss. , and uses ivermectin to treat her cattle. To her, the drug is as familiar, safe, cheap and effective as vitamins: "We've been using it on the farm for 40 years.

Add Yahoo as a preferred source to see more of our stories on Google. OTTAWA -- The Canadian Medical Association says doctors are worried that more of their patients are turning to artificial intelligence for health advice -- and getting answers that put them in danger.