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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.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.