Nutrition Science is broken because of the financial incentives of companies to fund sham research to get their products sold. I strongly recommend going to https://nutritionfacts.org/ for your information -- a nonprofit that never sells anything or promotes any products, just tries to distill research on nutrition in easy-to-understand videos and posts. Here's an example: "How the Egg Board Designs Misleading Studie…
It would be great if this website answered the question “what is a healthy diet”, instead of trying everywhere to get me to watch some of its hundreds of videos.
Plus different activity levels make different diets healthy - if you're a professional athlete needing 6,000+ calories per day, "healthy" for you is very different to healthy for me, who sits at their desk all day.
This isn't even accounting for personal preferences like being vegan, or religious restrictions.