If the board has decided to put more emphasis on animal based proteins then those are good to a level where the concentration of fatty acids in the animal based food will eventually led up to a fat accumulation in the body. The percentage of plant based carbohydrates in a well balanced diet is necessary because of it's very low concentration of fatty acids. Furthermore, the plant based meal also contain those essential vitamins that aren't present in animal based foods.
Penny develops severe headaches twice a week. Because Penny is abusing steroids which means she taking way to much and since she's doing that; she having frequent headaches.