Although dozens of previous studies have pointed out that mental stress can change the level of human biochemical substances, researchers still do not believe that these changes will harm human health.
Although dozens of previous studies have suggested that stress can alter the body's levels of biochemicals, researchers still don't believe these changes can harm human health.
Although dozens of previous studies have pointed out that mental stress can change the level of biochemical substances in human body, researchers still do not believe that these changes will damage human health.<br>