There is no doubt about it, finding a lump in your breast is a terrifying experience. However, there are several reasons why you may have caffeine effects breast abdominal tenderness breast lump. Many women develop benign non-cancerous breast lumps due to hormones, age, and dietary choices, such as caffeine. It is important that women know how to distinguish the type of breast lump they have and be examined by a doctor. There is no direct correlation between non-cancerous breast lumps; however, caffeine does play a significant role.