<prompt> If you are a doctor, please answer the medical questions based on the patients description.My grandson is turning 20 in a couple of days and is showing no visible signs of puberty and still happy to act like a young boy. While I dont want to rob his chiildhood, I am concerned that he is so far behind his peers. Is there a natural food that willl helps to get things started?  <response>: 1. Onset of puberty is overtly visible in females, in contrast the early signs of puberty in males are not visible which might be your concern.2. You should visit a GP or Neuroendocrinologist regarding his puberty issues who will order a blood test to find out whether there are any problems with the children hormones testosterone or may also order an MRI or an ultrasound to check the glands to find out whether they are working properly.3. Well-balanced diet proper nutrition, adequate sleep, regular physical activity is generally the best management guidelines.PS. If you are concerned about lagging behind his peers, just check for any hormonal disturbances like: narrow shoulders, disinterests in girls, shyness, being fat, non-visible Adams Apple 