Examlex
When immunization levels in a population are high, provides protection from infection for at-risk persons who cannot be immunized.
Epinephrine
A hormone and neurotransmitter also known as adrenaline, involved in the body's fight-or-flight response, increasing heart rate and blood flow.
Perimenopause
The beginning of menopause, usually characterized by 3 to 11 months of amenorrhea or irregular periods.
Amenorrhea
A medical condition characterized by the absence of menstruation in someone of reproductive age.
Testosterone
A steroid hormone produced primarily in the testes of males and the ovaries of females, playing key roles in male sexual development and muscle and bone mass.
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