The WFPB-scientists say: the more plant-based, the better for our health. But it's not scientifically proven that 100% is better than 90%. They advise it though because it can make it easier to resist unhealthy temptations if you make 100% your personal rule. Like you would not want to smoke 1 cigarette a day. If you still allow a little bit of the unhealthy stuff, it can easily grow bigger over time. So I guess you will feel better if you can move towards 100%.
As for vegetable combinations: mushrooms + onions + dark green leaf vegetables at the same meal is an extremely powerful anti-cancer cocktail. Gives a super boost to the immune system, says Joel Fuhrman MD in his book 'Super Immunity'.
