Did you know there are some people who have to go on diets to gain weight?

Did you know there are some people who have to go on diets to gain weight?

For example, my friend was told by her doctor that she needs to gain weight. The doctor gave her certain weight gain supplements to try. My friend has been very skinny her whole life and it can cause some serious problems, like injuring her ankles and wrists and getting sick easily. That is why weight gaining supplements can be very useful to some people.