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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Excessive alcohol use costs the country approximately $235 billion every year.
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.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.