20. Instant Ramen

Instant ramen. The single, most-important source of nutrition for many college students who are either too busy studying or too lazy to prepare meals, is also one of the unhealthiest foods out in the market. One pack of this stuff contains 14g of fat and a staggering 1,580mg of sodium, exceeding the recommended daily allowance of the mineral. Both fat and sodium play a destructive role in heart health, contributing to hypertension and thereby increasing the risk for heart disease.