Protruding sternum in men may be a result of a thin body type or chicken breast, and treatment options include medication, molding correction and surgery. Certain men may have protruding sternum due to thin body type and low fat content. No special treatment is needed and appropriate weight gain is possible. In children with vitamin D deficiency rickets, the sternum and adjacent cartilage may protrude forward, creating a “chicken breast” deformity. For this type of children, oral vitamin D can be taken, and during the period of medication, pay attention to the follow-up, regular review, and at the same time give the appropriate amount of calcium and zinc, iron and other trace elements. Other treatments for chicken breast include body contouring with exercise, thoracic power compression, and surgery. Exercise can be considered to correct the deformity to a lesser degree, while more severe cases can be corrected with devices or surgery, with the more widely practiced surgery being minimally invasive chicken breast surgery (i.e., the anti-Nuss procedure). If the sternum is protruding, you should consult a doctor promptly and choose the appropriate treatment according to your individual situation.