Hello dear,
First of all, please do not get influenced by any advertisement or health product which claim to boost your
growth hormone & increase height...it may be harmful.
Height of an individual is determined by Genetics, Environmental & Nutritional factors and
Hormonal factors (most important the Growth Hormone secreted by
pituitary gland in brain)
An individual stops growing in height after the fusion of the Epiphyses (growth plates) of the long bones, which occurs by the age of 17-21 yrs in males.
So...as you are 18 years old now, there is still a good chance of further increase in height.
An X ray for
bone age determination can be taken to look for the fusion of epiphyses.
Make sure that you are taking a healthy & balanced diet, exercise regularly & avoid stress.
Protein rich diet like soya, groundnut, pulses, etc should be incorporated in your
diet plan.
Wishing you Good Health.
Take care.