Just eat a balanced diet based upon non processed food and do so in moderation. Then move around a bit
I had a teacher a long time ago who frequently told us to make sure we ate Apples or Bananas or whatever it was, now while it was still healthy / good for you.
She had observed a lot of twists and turns in what science decided was healthy or not over her lifetime.
All hype and fads that has laser focus on a single issue to avoid or pig out on are unhealthy.
I remember having co-workers who were dieting by eating big cubes of (Highly processed) cheese and packets of (highly processed) lunch meat.
Just 4 to 5 packages of plastic wrapped pseudo ham and whatever.
I dont care what it was called or who endorsed it but there is no way in hell that was a healthy idea.