The best foods for weight gaining are those high in calories and rich in nutrients. These include:

  • Lean Proteins: Chicken, beef, fish, and eggs.
  • Healthy Fats: Avocados, nuts, seeds, and olive oil.
  • Complex Carbohydrates: Whole grains like oats, quinoa, and brown rice.
  • Dairy Products: Whole milk, cheese, and yogurt.
  • Calorie-Dense Snacks: Nut butters, dried fruits, and smoothies.