A 19 84 time magazine cover story has the headline, sorryi true callesteral really is a killer. And so all this information is sort of telling us that we should change the way we eat. But there never been a study that shows that eating less than 30 % fat reduces heart disease. There's no evidence that reducing your fat to that level will reduce hert attacks,. Because nobody has ever been able to do it for that long thre is actually in 19 87 n your times article.