Hi My son age is 7 years and 9 months and his...

Dear Customer

 The evaluation of the answer from the top of the page after reading it helps us to improve the quality of the answers and ensure the best experts are available to assist you
Normal child weight at the age of 7 and 9 months ranges between 22kg to 30kg
Being 40Kg in terms of weight requires to investigate the reason

Reasons

unhealthy eating habits which is cause in more than 95% of the cases
 Medical reasonsand they are mostly hormonal
Hypothyroidism
Cushing Syndrome
other medical reasons are genetic or hereditary
Treatment
keep a healthy dietary regimen: try to let your child have 3 meals with good amounts of vegetables and less carbohydrates
Try to prevent him from eating unhealthy food between meals 
you can encourage him to participate at a sport club, as daily exercise are important for your child development
Treat the medical reason if existed
Investigations
TSH, T3, T4
Urine collection for 24 hours to determine the steriod level
Random blood sugar
Fasting Blood Sugar
Advice
    You can start by doing the TSH, T3, T4 tests especially if his dietary habits are healthy
Complications of Weight gain in children is mainly Diabetes, so you need to be careful

Best wishes

You can also use follow-up sessions with me on the phone. If you want to get a phone session, it will cost you a small call fee

jawabkom.com/60295745
 

We are always happy to communicate, and you can also consult many experts on your answer, such as lawyers, dietitians, engineers and others

Best regards