D since gentics would make you more prone to drink and or have to drink less. same with age.
C, inhalants can cause immediate brain damage.
Make a weekly shopping list. Buy lots of healthy fruits and veggies. Buy pre-cooked meats like grilled chicken or steak fajita strips. Once home, wash and chop all veggies. These can be combined in minutes into healthy salad or stir-fried for a quick meal.