Don't be alarmed if you find yourself forgetting things or unable to focus on the task you have at hand. Problems with memory and concentration frequently occur during perimenopause.  Estrogen has many positive effects on the brain. It increases blood flow to the brain and aids learning and memory by helping nerve cells form new connections. As estrogen production decreases during perimenopause, some women may begin to have problems remembering things and concentrating on tasks.

TIP: Supplementing with a B vitamin often helps to prevent or improve memory or concentration problems.