According to the “familydoctor” website, here are the most important methods that help in treating the problem of thinness without the need for a total change in the diet and the quality of food.
Try almonds, sunflower seeds, fruit, or whole-wheat toast.
Instead of eating empty calories and junk food, eating foods rich in nutrients, consider high-protein meats, which can help you build muscle, and nutritious carbohydrates, such as brown rice and other whole grains, help ensure you get the most nutrition.
Add healthy calories by adding nuts or seeds, cheese, and healthy side dishes.
Consider options such as trail mix and protein bars or drinks and biscuits with hummus or peanut butter.
Enjoy snacks that contain “good fats”, which are important for heart health, such as nuts and avocados.
Enjoy snacks that contain lots of protein and healthy carbohydrates.
While a lot of aerobic exercise will burn calories and work against your weight goal, strength training can help. This includes weightlifting or yoga. You gain weight by building muscle.
Before starting a weight gain program, talk to your doctor. Underweight may be due to an underlying health problem, which will not be corrected by diet changes. Your doctor will be able to help you track your progress. He or she will make sure of occurring.
Eat smaller meals If you have a poor appetite due to medical or emotional issues, eating large amounts of food may not seem attractive. Consider eating smaller meals throughout the day to increase the amount of calories you eat.