The benefits vs food types don't make sense, and the approach does not encourage food diversity.
For example:
- eat fresh fruit - down to 1 star
- Live on a diet of only french fries - 4 stars
Perhaps give foods a few ratings, typical of RL - carbs, sugars, protein, fibre - and then you get stars for getting enough of each. This lets all food be useful, creativity in food combinations, and avoids a single food life.