Tag Archives: menstrual cycle

Why Do Humans Menstruate?

All female placental mammals have a uterus lining (“endometrium”) that builds up when the animal is fertile. If the egg is not fertilized, most mammals reabsorb this lining into their uterus (“covert menstruation”), however a few mammals, including humans, shed this lining … Continue reading

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Light Spotting a Few Days Before Period

Over the last six months I’ve started to experience light spotting a couple of days before each period begins. The spotting is very light and is usually a brownish colour (or sometimes red).

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Average Menstrual Cycle Length

Average menstrual cycle lengths: A “menstrual cycle” is the period between the first day of one’s menstrual period to the first day of the next. The normal menstrual cycle for adolescents is between 21 and 45 days. This is slightly longer … Continue reading

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