2. Excess Body Weight
If you’re overweight or obese, your estrogen levels are likely higher than average. Increased estrogen levels can cause the endometrial lining to thicken while interrupting egg release via the ovaries, which is why overweight women tend to experience heavy, erratic, and lengthy periods. However, what you might not know is that excessive estrogen production over the long term can heighten your risk of endometrial cancer. Talk to your doctor.