How to Gain Weight When You're Skinny

How to gain weight when you're too skinny. Hypercaloric nutrition and strategy.

8 to 14 months
Recommended duration
0.5-1 kg (1-2 lbs) per month
Expected rate

Calorie calculation examples by profile

Skinny woman, 25 years old, 99 lbs

Maintenance calories 1600 kcal
Target (with surplus) 2200 kcal
Deficit: -600 kcal/day

Active skinny woman, 25 years old, 99 lbs

Maintenance calories 1900 kcal
Target (with surplus) 2500 kcal
Deficit: -600 kcal/day

Skinny man, 25 years old, 121 lbs

Maintenance calories 2000 kcal
Target (with surplus) 2600 kcal
Deficit: -600 kcal/day

Active skinny man, 25 years old, 121 lbs

Maintenance calories 2400 kcal
Target (with surplus) 3000 kcal
Deficit: -600 kcal/day

Understanding being underweight

Being too skinny can have several causes: high metabolism, reduced appetite, altered intestinal absorption, or simply insufficient eating habits. Whatever the cause, the solution involves a higher calorie surplus than average, typically 500-700 kcal above maintenance.

A substantial calorie surplus

Skinny people benefit from a higher surplus than normal. Start with a 500 kcal surplus and increase to 700 kcal if needed. The goal is to gain 0.5-1 kg (1-2 lbs) per month. If you're not gaining weight after 2 weeks, increase your intake by 200 kcal.

Strategies for eating more

When appetite is limited, you need to be strategic: eat more frequently (5-6 meals), favor calorie-dense foods (nuts, butters, oils, avocados), drink your calories (smoothies, shakes), and avoid filling your stomach with low-calorie foods.

Establishing an eating schedule

Skinny people often need to eat on a schedule rather than following their appetite. Schedule 5-6 meals/snacks per day at set times. Voical helps you track your intake to ensure you reach your daily calorie goal.

Important

Never go below 1200 kcal/day (women) or 1500 kcal/day (men) without medical supervision. Too aggressive a deficit can be dangerous for your health and counterproductive for weight loss.

Complete Guide to Gaining Weight When Skinny

Gaining weight when naturally skinny can seem impossible, but with the right nutritional strategy, it’s absolutely achievable. This guide gives you the keys to overcome the specific challenges of being underweight.

Why It’s Harder for Skinny People

Skinny people often face:

  • A faster metabolism than average
  • A naturally limited appetite
  • Early satiety
  • Sometimes reduced intestinal absorption

These factors require an adapted nutritional approach.

Calorie Surplus for Skinny People

Unlike the standard 300-500 kcal surplus:

  • Recommended surplus: 500-700 kcal/day
  • If no gain after 2 weeks: +200 kcal
  • Goal: 1-2 lbs (0.5-1 kg) per month

Example for a Skinny 121 lb (55 kg) Man

  • Estimated maintenance: 2000 kcal
  • Surplus target: 2500-2700 kcal/day
  • Expected gain: 1-2 lbs (0.5-1 kg)/month

Strategies for Increasing Calories

Calorie-Dense Foods

FoodPortionCalories
Peanut butter2 tbsp190 kcal
Mixed nuts1.75 oz300 kcal
Avocado1 medium230 kcal
Olive oil2 tbsp240 kcal
Cheese1.75 oz180 kcal

High-Calorie Smoothie

  • 2 bananas: 200 kcal
  • 3 tbsp peanut butter: 285 kcal
  • 13 oz whole milk: 240 kcal
  • 1/2 cup oatmeal: 190 kcal
  • 1 tbsp honey: 60 kcal
  • Total: 975 kcal in one glass

Sample Meal Schedule

TimeMealCalories
7amBreakfast500 kcal
10amSnack300 kcal
1pmLunch600 kcal
4pmSnack300 kcal
7pmDinner600 kcal
9pmSnack300 kcal
Total2600 kcal

Mistakes to Avoid

  1. Relying on appetite: Eat on schedule, not based on hunger
  2. Low-density foods: Avoid filling your stomach with bulky vegetables or salads
  3. Skipping meals: Every meal counts when trying to gain weight
  4. Giving up too soon: Results take time, be patient

Why Voical Can Help You

For skinny people, calorie tracking is essential. Many think they’re eating enough when they’re actually in a deficit. Voical lets you objectively verify your intake and ensure you reach your target surplus every day.

Frequently asked questions