Conclusion
Gynecomastia is a medical condition that occurs when men start to develop breasts due to imbalanced sex hormones in the body. The condition can be treated without surgery. Your healthcare provider may recommend lifestyle changes, diet changes, and therapy. It would help to visit a hospital if you notice symptoms like swelling or discharge from the nipples.
References;
[1] https://www.medicalnewstoday.com/articles/277177
[2] https://medlineplus.gov/druginfo/meds/a604017.html
[3] https://www.health.harvard.edu/medications/testosterone–what-it-does-and-doesnt-do
[4] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5519084/
[5] https://my.clevelandclinic.org/health/diseases/14129-hyperthyroidism
[6] https://www.nhs.uk/conditions/anabolic-steroid-misuse/