https://www.bbc.co.uk/ideas/videos/is-a-vegan-diet-healthier-than-eating-meat-and-dai/p0b5x2z7
Key Points:
Whole,unprocessed foods: cook your own foods, simple but fresh and using healthy ingredients
Variety: never eat the same foods day after day
Balance: each group of nutrients has its role, protein, carb, fat/dairy, vitamins, minerals....
Adequate: refers to quantity, enough for your body; not too much; not too little