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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.
There are more nerve cells in one human brain than there are stars in the Milky Way.
In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
The horizontal fraction bar was introduced by the Arabs.