How vitamins currently work has been bothering me more than it should, it's just ridiculous that you can chug them for an instant energy boost. So I was thinking how it could be made more realistic in an interesting way.   * Add two internal values (similar to how the game keeps track of hunger and thirst) for the player: vitamins and minerals. * Add vitamin and mineral content to all food items: Vegetables have high vitamins, meat has high minerals, junk food is low on both, etc.