Answer: Scientists must be concerned about the impacts it causes on normal people due to aging.
Step-by-step explanation:When a healthy human takes the growth hormone they do not any side effects or symptoms at the early stage. Once they start aging they have joint and muscle pain in legs and arms earlier than other people of their age and also result in diabetes, blood pressure and heart and lung diseases.
The Human growth Hormone can also cause tumors in brain and also indulge in growth and development of Cancer Cells in people who has cancer or had been diagnosed before.So these are the main side effects that scientists should rectify in Human Growth Hormone.