Nutrition Support for Healthy Weight Gain

For individuals who are underweight or struggling to maintain weight, safely increasing calorie and protein intake can help support strength, energy, and overall health.

Gaining weight slowly and intentionally can improve muscle mass, immune function, healing, and quality of life.

Getting Started: Key Principles

Small, frequent meals are often easier to manage than large meals
Calories should come from nutrient-dense foods, not just sweets
Protein is essential for muscle and strength
Fluids can help add calories when appetite is low

Meal Planning Tips for Weight Gain

Aim for 5–6 small meals or snacks per day
Eat every 2–3 hours, even if portions are small
Choose beverages that add calories:
- Milk, smoothies, shakes, juice (as tolerated)
Include protein at every meal and snack
Keep convenient foods available for low-energy days

Ways to Add Calories Without Large Portions

Add butter, oil, cream, cheese, or nut butter to foods
Use gravies, sauces, dressings, or spreads when tolerated
Choose whole-fat or full-fat dairy products unless advised otherwise
Sweeten foods with honey, jam, syrup, or sugar if appropriate
Add powdered milk or protein powder to soups, oatmeal, or mashed foods

Protein-Rich Food Choices

Meat, Fish, Eggs & Alternatives

Eggs (scrambled, boiled, added to casseroles)
Chicken, turkey, beef, pork, fish
Tuna or salmon packed in oil
Beans, lentils, chickpeas
Nut butters and seeds
Protein powders or shakes if solid foods are difficult

High-Calorie Add-Ins

Fats & Oils

Butter or margarine
Olive, canola, or vegetable oils
Mayonnaise
Cream cheese

Dairy

Whole milk or half-and-half
Yogurt (regular or sweetened)
Ice cream or frozen yogurt
Cottage cheese or shredded cheese

Snack Ideas for Weight Gain

Peanut butter on toast or crackers
Yogurt with fruit or granola
Cheese and crackers
Trail mix or nuts
Smoothies with milk, fruit, and nut butter
Pudding, custard, or ice cream

Using Meal Replacements

Meal replacement drinks, bars, or powders may be helpful if appetite is low or chewing is difficult.

Use between meals, not as a meal replacement unless advised
Look for options with protein + calories
Discuss long-term use with your healthcare provider

Helpful Tips for Low Appetite

Eat when you feel most hungry (often earlier in the day)
Avoid filling up on low-calorie fluids before meals
Sit upright during and after meals if reflux is a concern
Keep favorite foods available
Focus on progress, not perfection

When to Talk to Your Healthcare Provider

If weight loss is ongoing or unintentional
If nausea, early fullness, or swallowing issues limit intake
If chronic illness affects appetite or digestion
Before starting any new supplements, or using supplements long-term

⚠️ Medical Disclaimer

The information provided in this resource is for general educational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment. Individual needs vary based on medical history, medications, allergies, and overall health status.

Before making any changes to your diet, trying new foods, modifying portion sizes, or following any nutrition recommendations, please consult your physician, registered dietitian, or other qualified healthcare provider. If you have diabetes, kidney disease, gastrointestinal conditions, food intolerances, or other chronic health concerns, discussing dietary changes with your healthcare team is especially important.

This handout is for educational purposes only and is not a substitute for professional medical advice. Always follow your healthcare provider’s instructions.