no
Steroids
The average weight gain for a one year boy is to triple their birth weight. Most children that are one year old have grown by 50 percent and have gained 9 to 11 inches since birth.
just eat at fast food spots
There are protien shakes that help you gain permanet weight if you are having trouble with this.
Anything unatural shouldn't be considered safe. You can give him "Gain powder" but i suggest you visit your MD before doing so.
a good weight for a 9 year old is 35
an average nine year old boy's weight is about 75 to 90 pounds
Because I am a 13 year old boy and I am From Philippines, and my height is 5'0 but I am too thin and I weigh about only 30 kilos.
Exercise Daily and eat healthily. Speaking to your doctor or a nutritionist would also be a good idea.
10.5kg
Make sure they are eating often and regularly and are having a healthful diet, as well as plenty of fluids and sleep.