Whole milk is loaded with saturated fat, the type of fat that raises bad cholesterol levels, promotes inflammation, and may contribute to clogged arteries. Thanks to the extra fat, it's also higher in calories than lower-fat milk. Do your heart and waistline a favor and switch to skim (fat-free) or one-percent low-fat milk (soy milk works, too) — it's one of the easiest changes you can make for a healthier diet. Skim and low-fat milk minimize the bad stuff, while delivering all the good stuff (protein, calcium, vitamin D, and potassium).
P.s: Milk consumption in general is nutritionally unnecessary, as a healthy diet can provide adequate calcium through beans, nuts, green leafy vegetables, and certain types of fish.