Keep it very limited. It is the key player in raising your cholesterol level. Take fish, for example, you may get 9g of fat per serving, but only 1 g of saturated. Fish contains omega-3 fatty acid, which is good for heart disease. It is fat, but not saturated fat, so don't let most fish scare you off.
Most folks get too much protein.
It is found mostly in meat. Lean beef, fish, and poultry are your best sources of protein, because they lack the excessive amounts of saturated fat and cholesterol. Too much protein is hard on your kidneys. Getting your vitamins from food is the best way to get them. Just look at the percentages down the right hand column.