An unhealthy diet typically includes excessive amounts of processed foods, sugary drinks, and high-fat snacks. These foods often lack essential nutrients and can lead to weight gain, heart disease, and other health issues. Common examples include fast food, candy, and sugary cereals. Additionally, an unhealthy diet may be low in fruits, vegetables, and whole grains, which are important for overall health. A lack of these nutrient-rich foods can result in deficiencies and negatively impact energy levels, digestion, and immune function. Maintaining a balanced diet is crucial for long-term well-being.