What vitamin B3 can teach us about heart health—and being willing to change our minds I have always believed that taking care of ourselves means being willing to learn. Sometimes that means adding something helpful. Sometimes it means reconsidering something we have been doing for years. Niacin is a lovely example of why that willingness matters. For decades, niacin was used to improve cholesterol levels. It could raise HDL, often called “good” cholesterol, lower triglyceride

Here’s a little secret about medicine: It changes its mind. And thank goodness it does. Not because doctors were foolish 30 years ago. Not because researchers were incompetent. And certainly not because your grandmother was trying to lead you astray when she insisted that whatever she was recommending had “been proven.” We simply don’t know what we don’t know. Medical advice is generally based on the best evidence available at the time. Then larger studies are conducted. Peop