Researchers found that people with higher bone density had significantly better verbal memory than people with lower BMD. According to study director dr. Zhangaz Boston University increases the low estrogen risk of verbal memory problems and "bone density is a good marker of total estrogen exposure".Just a few hours a week of connecting to the Internet means that the network user feels more socially isolated and feels more depressed. The longer the connection time, the more noticeable the negative effects are.