Just eat a balanced diet and exercise. Don’t smoke, drink, or do drugs (if you do then do them sparingly). Everything else won’t move the needle and should be mostly ignored - someone is selling you something or gaining a click.
Luckily for the American health care industry people ignore that advice and do their very level best to oppose it at every turn.
I've never seen a particularly good definition for "balanced diet", and many communities that are super healthy have diets that don't look balanced at all.
Luckily for the American health care industry people ignore that advice and do their very level best to oppose it at every turn.