How to tell if you have gynecomastia or just fat, Gynecomastia is a condition that affects men, leading to the enlargement of breast tissue. This can lead to the appearance of “man boobs,” which can be a source of embarrassment and insecurity for many men. However, it can be difficult to tell if the breast tissue is the result of gynecomastia or simply a buildup of fat. In this blog post, we will discuss the differences between gynecomastia and pseudogynecomastia and how to tell if you have the condition.