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What to Eat to Gain Weight in Humans (Not Once Human): A Nutritional Guide

4 min read

According to the World Health Organization, energy intake should be balanced with energy expenditure to avoid unhealthy weight fluctuations. If your goal is to gain weight, especially after a period of being underweight, understanding what to eat to gain weight in humans is key—it is not related to the video game Once Human, which some searches might suggest. This guide focuses on building healthy mass through strategic, nutrient-rich dietary choices.

Quick Summary

A healthy weight gain plan requires consuming a consistent calorie surplus from nutrient-dense, whole foods. The focus should be on integrating quality proteins, complex carbohydrates, and healthy fats into daily meals and snacks to safely increase body mass and support overall health.

Key Points

  • Embrace a Calorie Surplus: To gain weight, consistently consume more calories than you burn each day from nutrient-dense foods.

  • Prioritize Protein: Fuel muscle growth and repair by including protein-rich foods like eggs, fish, and lean meats in every meal.

  • Load Up on Healthy Fats: Easily increase calorie intake with healthy fats from nuts, seeds, avocados, and olive oil.

  • Choose Complex Carbs: Opt for whole grains, starchy vegetables, and legumes to provide sustained energy for workouts and daily activities.

  • Incorporate Regular Strength Training: Pair your diet with resistance exercises to ensure the weight you gain is muscle mass, not just fat.

  • Snack Strategically: Use high-calorie, nutrient-dense snacks like smoothies, trail mix, and peanut butter toast to increase daily intake.

In This Article

Demystifying Healthy Weight Gain

For some, gaining weight can be as challenging as losing it. The key is to achieve a consistent calorie surplus, meaning you consume more calories than your body burns daily. However, this is not a license to eat junk food. Healthy weight gain focuses on increasing calories with nutrient-dense foods that provide energy and building blocks for muscle and healthy tissue, rather than just fat. Combining this dietary strategy with a strength training routine is the most effective approach to build lean muscle mass and prevent excess fat accumulation.

The Foundational Pillars of a Weight Gain Diet

Building a healthy diet for weight gain rests on three primary macronutrients: protein, carbohydrates, and fats. Each plays a crucial, distinct role in fueling the body and building mass.

Protein: The Muscle Builder Protein is essential for repairing and building muscle tissue. Without enough protein, the body cannot effectively build new muscle mass, even with a calorie surplus.

  • Lean Meats: Chicken breast, turkey, and lean beef are excellent sources of high-quality protein.
  • Fish: Fatty fish like salmon and tuna provide a powerful combination of protein and healthy omega-3 fatty acids.
  • Eggs: A versatile and complete protein source, eggs offer a balance of proteins, fats, and essential micronutrients.
  • Dairy Products: Full-fat milk, Greek yogurt, and cheese are packed with protein and calories.
  • Plant-Based Options: For vegans and vegetarians, sources like lentils, chickpeas, tofu, and edamame are rich in protein and fiber.

Carbohydrates: The Energy Provider Complex carbohydrates are your body's primary energy source, fueling your workouts and daily activities. Choosing nutrient-dense complex carbs over refined sugars is crucial for steady energy levels and overall health.

  • Whole Grains: Oats, brown rice, quinoa, and whole-wheat bread provide fiber and sustained energy.
  • Starchy Vegetables: Sweet potatoes, potatoes, and winter squash are calorie-dense options.
  • Legumes: Beans and lentils are excellent sources of complex carbs and plant-based protein.

Healthy Fats: The Calorie Powerhouse Fats are the most calorie-dense macronutrient, containing 9 calories per gram compared to 4 for protein and carbs. Incorporating healthy fats is a simple way to increase calorie intake without consuming large volumes of food.

  • Nuts and Nut Butters: Almonds, walnuts, and peanut butter are easy, calorie-dense snacks.
  • Avocados: This fruit is loaded with monounsaturated fats and essential nutrients.
  • Oils: Olive oil and coconut oil can be added to salads, cooked vegetables, and other dishes for an easy calorie boost.
  • Dark Chocolate: High-quality dark chocolate (70% cacao or higher) provides antioxidants and healthy calories.

Strategies for Maximizing Calorie Intake

To successfully gain weight, you need more than just the right foods; you need the right strategy for eating them. For some, eating more can be uncomfortable, so these tips can help integrate extra calories seamlessly.

  • Eat More Frequently: Instead of three large meals, try eating 5-6 smaller, more frequent meals and snacks throughout the day.
  • Use Calorie-Boosting Additions: Top your meals with calorie-dense additions. Sprinkle nuts or seeds on oatmeal, add cheese to casseroles, or stir nut butter into yogurt.
  • Enjoy Nutrient-Rich Smoothies: A homemade smoothie with whole milk, fruit, nut butter, and protein powder is a powerful, easy-to-drink source of calories and nutrients.
  • Don't Drink Your Calories, Drink Your Nutrients: Avoid filling up on low-nutrient beverages like soda. Instead, opt for calorie-dense drinks like full-fat milk, smoothies, or fruit juices between meals if needed.
  • Snack Smart: Have nutrient-dense snacks readily available, such as trail mix, protein bars, and dried fruit.

Choosing Your Foods: Healthy vs. Unhealthy Weight Gain

When gaining weight, the quality of your calories matters just as much as the quantity. The table below highlights the difference between healthy and unhealthy food choices for a weight gain diet.

Feature Healthy Weight Gain Foods Unhealthy Weight Gain Foods
Calorie Source Primarily from protein, healthy fats, and complex carbohydrates. Often from added sugars, saturated fats, and processed ingredients.
Nutrient Density High in vitamins, minerals, and fiber (e.g., avocados, nuts, whole grains). Low in essential nutrients, providing "empty calories" (e.g., candy, cookies).
Impact on Body Supports muscle growth and overall health. Contributes disproportionately to fat storage and can increase health risks.
Examples Salmon, quinoa, Greek yogurt, eggs, olive oil. French fries, sugary drinks, fried chicken, processed snacks.

The Crucial Role of Exercise

Your weight gain journey should include regular physical activity, specifically resistance or strength training. Exercise builds muscle and stimulates your appetite, ensuring that the extra calories you consume are channeled into building lean mass rather than just body fat. This approach leads to a healthier body composition and better overall fitness.

Conclusion

Gaining weight healthily requires a mindful approach to nutrition, prioritizing a calorie surplus from nutrient-dense sources. By incorporating protein-rich foods, complex carbohydrates, and healthy fats, along with regular strength training, you can achieve your goals safely and effectively. It’s about building a stronger, healthier body, not just increasing the number on the scale. For personalized advice, consider consulting a healthcare professional or a registered dietitian. For further resources on healthy eating, visit the World Health Organization website.

Frequently Asked Questions

Yes, absolutely. A healthy weight gain focuses on nutrient-dense, calorie-rich foods like nuts, whole grains, lean proteins, and healthy fats, avoiding processed foods that are high in sugar and unhealthy fats.

For healthy and gradual weight gain, aim to add around 300 to 500 extra calories a day. For faster results, some may increase this to 700-1000 calories daily, but consulting a professional is recommended.

Great high-calorie, nutrient-dense snack options include trail mix with nuts and dried fruit, whole-grain toast with avocado or nut butter, Greek yogurt with granola, and protein shakes.

Protein is crucial for building muscle, which is a core component of healthy weight gain. It helps repair and build muscle fibers damaged during exercise. Spreading protein intake throughout the day is key for optimal muscle growth.

If you have a poor appetite or get full quickly, avoid drinking too many fluids with your meals, as they can reduce your appetite for solid food. Instead, drink calorie-dense beverages like milk or smoothies between meals.

Exercise, especially strength training, is vital for healthy weight gain because it helps build muscle mass rather than just fat. It also helps stimulate your appetite and supports a healthy body composition.

You can add extra calories by incorporating healthy fats. Drizzle olive oil on vegetables, add nuts and seeds to salads, stir nut butter into oatmeal, or use full-fat dairy products.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.