Depends on when you're talking about.
If you lived 30years ago, you were eating really healthy if you consumed margarine instead of butter.
Crisco was really good for you. Lucky Strikes were a sure way to lose weight and be healthy.
Nowadays, people still think chicken is healthy, red meat isn't. Yet, clinical studies show that grinding hamburger releases a component of the red meat cell that protects against cancer.
Also a filet mignon has about the same cholesterol, fat, protein and calories as a skinless chicken breast of the same weight.
People think that a egg and bacon breakfast isn't as good for you as turkey bacon and a muffin, but the turkey bacon has twice as much sodium in it as regular bacon. Saw this recently on a daytime news show.
25 years ago, chicken was REALLY good for you until in Puerto Rico, where they consume a lot of chicken, young boys were growing breasts due to all the hormones in the chicken to make a lot of white meat.
The list goes on. Bottled water is still popular, even though study after study shows that there can be more contaminants in spring/aquifer water, than processed water out of your tap. I prefer to believe the Fiji hype, that their's is the last clean aquifer on earth. Anyway, Fiji water sure tastes good.
I drink a lot of it.
Alcohol used to be bad for you. Now 1-2 drinks a day are good for you. But others will say only red wine is good for you. And yet in the news today, alcohol protects your brain in a car accident.
Some say vitamin supplements are good for you. Sure, go down to the sewage processing plant and ask them what that MOUNTAIN is? Its undigested vitamin pills that go right on through without dissolving.
And it goes on and on.
"I'm gonna down to St. James Infirmary,
Boy, hand me some more of that boooooozzzzz!"