Being underweight can leave you tired, weak and more likely to fall ill. Many people think the solution is to eat junk food or take mass gainers. That adds fat, not strength, and often upsets digestion. A real-food plan works better.
First, find the reason
Before the plan, ask why you are underweight. Common reasons are:
- A small appetite or skipping meals
- A fast, busy lifestyle with long gaps between meals
- Stress or poor sleep
- Digestive problems
- A medical cause such as a thyroid problem
If you are losing weight without trying, see your doctor first.
The three levers
- Eat more often. Aim for 3 meals and 2 to 3 snacks.
- Make each bite count. Add energy-dense foods.
- Add protein and strength training. This builds muscle, not just fat.
Energy-dense real foods
- Nuts and seeds, peanuts, peanut butter, dates and raisins
- Ghee, coconut and healthy oils (in sensible amounts)
- Banana, mango, chikoo and other calorie-rich fruits
- Full-fat milk, curd, paneer and cheese
- Eggs, chicken, fish
- Potato, sweet potato, rice, ragi and whole grains
A sample day (idea)
- Early morning: a glass of milk with ragi malt or dates
- Breakfast: 3 idlis or 2 dosas with ghee, sambar, and 2 eggs or a bowl of sprouts
- Mid-morning: banana shake or a handful of nuts and a fruit
- Lunch: rice, dal with ghee, a vegetable side, curd, and fish, chicken or paneer
- Evening: peanut chikki, a sandwich with paneer or egg, or sundal
- Dinner: chapatis or rice with a protein curry and vegetables
- Bedtime: warm milk with nuts
Tips that make it easier
- Drink calories as well (milk shakes, smoothies) if you get full quickly.
- Do not drink a lot of water right before meals.
- Set reminders so you do not skip snacks.
- Add ghee or oil to rice and dal in small, steady amounts.
- Strength exercise 3 times a week helps turn the extra food into muscle.
For children
Children who are underweight need food they enjoy and a routine. A dietitian can plan around their taste, school timings and growth.
When to get help
If you have tried eating more and nothing changes, a personal plan can find the hidden reason and fix it step by step.
Sources
- A brief note on Nutrient Requirements for Indians (2020), ICMR-National Institute of Nutrition
- Dietary Guidelines for Indians (2024), ICMR-National Institute of Nutrition
This article is general nutrition information, not medical advice. Talk to your doctor before changing your diet if you have a health condition or take medicines.
