Junk food is high in calories from sugar and fat but low in nutrients. Studies show junk food leads to obesity and diabetes in 60% of people. Rats that overeat junk food refuse healthier options. Junk food is attractive due to being simple, easy to prepare, tasty, and colorful. While convenient, junk food addiction leads to nutritional deficiencies and increased risk of health issues like hypertension, high cholesterol, and heart attacks. To maintain health, people should eat a variety of nutrient-rich foods in moderate portions regularly.