The burden of gynecomastia among men on antiretroviral therapy in Zomba, Malawi

BACKGROUND Many Africans who are on life-saving ART face challenges from a variety of toxicities. After the introduction of a standardized first-line efavirenz-containing ART regimen, reports of gynecomastia appeared in Malawian popular media, however data on the prevalence and risk factors of gynecomastia from Africa are lacking. METHODS We conducted a cross-sectional study in males ≥18 years registered on ART at the HIV clinic in Zomba Central Hospital. Men who reported to have ever experienced breast or nipple enlargement received a standard questionnaire and underwent physical examination. Questions included perceptions and concerns about gynecomastia. Clinicians confirmed the presence and severity of gynecomastia. Routinely collected data on current and previous ART regimens, CD4 count, WHO clinical stage, anthropometric measurements and history of tuberculosis were extracted from the electronic database. RESULTS We enrolled 1,027 men with median age 44 years (IQR: 38-52). The median ART duration was 57 months (IQR: 27-85); 46.7% were in WHO stage III/IV at ART initiation, 88.2% had exposure to efavirenz and 9% were overweight or obese. The prevalence of self-reported gynecomastia was 6.0% (62/1027) (95%-CI: 4.7-7.7%). Of men with gynecomastia 83.6% reported nipple enlargement and 98.4% enlarged breasts (85.5% bilateral). One-third said they had not reported gynecomastia to a health care worker. Over three-quarters mentioned that gynecomastia was an important or very important problem for them, while more than half were embarrassed by it. On examination gynecomastia was present in 90% (confirmed gynecomastia prevalence 5.5%; 95%-CI: 4.2-7.0%) and 51.8% had severity grade III or IV. History of tuberculosis treatment was independently associated with self-reported gynecomastia, adjusted OR 2.10 (95%-CI: 1.04-4.25). CONCLUSIONS The burden of gynecomastia among men on ART in Malawi was higher than previously reported, and was associated with adverse psychological consequences, calling for increased awareness, a proactive diagnostic approach and diligent clinical management.