Hello! I had gone through your query and understand your concern. Height of an individual is determined by genetics,nutritional factors and hormonal factors such as growth hormone. An individual stops growing in height after the fusion of the epiphyses of the long bones, which occurs by the age of 18-20 years in males. Considering the fact that you are 23 years old your bones had already fused and neither food supplements or specific exercises can have an obvious effect in increasing your height. If you are very determined to increase your high I can suggest to consult an Orthopedic surgeon because in your age the only way to increase height is surgery. There is a method called Distraction osteogenesi (or Illizarov technique),is a surgical process used to reconstruct skeletal deformities and lengthen the long bones of the body.Consult this with an orthopedic surgeon. Hope my answer has helped. Take care. Dr.Rovena