A 12-year-old boy who is obese and does not grow is generally able to take growth hormone if it is due to growth hormone deficiency and if there are no significant contraindications to the drug. However, if it is not due to growth hormone deficiency, growth hormone is generally not recommended. Growth hormone injections are mainly indicated for slow growth caused by endogenous growth hormone deficiency. If a 12-year-old boy has a growth hormone deficiency due to endocrine disorders in his body, which leads to a lack of growth, he can take into account his own situation and receive growth hormone injections under the guidance of a doctor to improve his lack of growth. It is important to note that the use of this drug is contraindicated in people who are allergic to the ingredients of growth hormone, or in people whose bones are completely closed. Some people may experience pain, redness and swelling at the injection site, as well as joint pain and other adverse reactions during the use of the drug. However, if the obesity and lack of growth of 12-year-old boys is not due to the lack of growth hormone in the body, the injection of growth hormone is generally not recommended. It is necessary to consult a doctor in time to clarify the cause and give targeted treatment.