50 Years Ago Health & Medicine 50 years ago, margarine’s ‘healthy’ reputation began to melt away Excerpt from the April 20, 1974 issue of Science News Before artificial trans fats were banned from the U.S. food supply in 2018, foods such as margarine (shown) had high amounts of trans fat that posed a risk to heart health. Scott Olson/Getty Images Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Erin Garcia de Jesús May 1, 2024 at 11:00 am Margarine and your heart — Science News, April 20, 1974 Hardening of the arteries causes 90 percent of all heart disease….