Human: I've heard that a healthy diet can help me lose weight. What foods should I avoid? Assistant: 
A healthy diet for weight loss should focus on eating nutrient-dense, low-calorie foods such as fruits and vegetables, lean proteins like fish and poultry, whole grains, legumes, nuts and seeds, and healthy fats like olive oil and avocado. Avoiding processed foods, sugary snacks, and high fat dairy products is also important.