Is gynecomastia harmful?

Possibly. I think the answer to your question would depend on whether the enlarged breast gland causes physical and/or psychosocial “distress”. If so, and if persistent, it is often best treated with partial excision of the prominent glandular tissue as well as liposuction surgery of the peripheral chest area.
Gynecomastia Concers. Gynecomastia simply means feminzation of a man's breast . It is not hamrful in the majority but can cause psycohological distress and is easiy surgically treated by a plastic surgeon. Causes are many and include medication side effects, thc use (marijuana) and other drugs, obesity, endocrine disorders and familal causes and rarely from a cancer.
It can be. While gynecomastia typically causes anxiety regarding ones appearance there is a small possibility of a cancer in a male breast. Best to see your local plastic surgeon who can do a thorough history and exam and help determine the cause and potential treatment options for your problem.
Psychologically. Gynecomastia or male breasts isn't physically harmful but can be psychologically or emotionally traumatizing. It could be due to excess estrogen relative to testosterone so adjusting that ratio might be enough. If not, and it bothers you, consult plastic surgeon.
Rarely can be. I presume that you are inquiring if there are dangers associated with enlarged breasts in males.The answer is rarely yes as breast cancer is a remote possibility.Usually, though the younger male with enlarged breasts is commonly plagued by psychosocial issues & possibly sensitivity of nipples & pain in the breast in a few. If medical issues are ruled out then surgical correction is the treatment.
Depends on situation. Since roughly half of males go through transient gynecomastia at the onset of puberty, and most resolve within 6m to a year, it's hard to consider it a horrible affliction. A few will have persistent or dramatic gynecomastia. If its not due to some medical condition or drug use is primarily a cosmetic issue. It can erode someones self concept , surgery is helpful.