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/topics/toilets-and-urinals
/topics/toilets-and-urinals
The female menstrual cycle is the intricate work of hormones. Usually, girls start their cycle anywhere between 12 and 17 years of age when a series of changes prepare their uterus for child-bearing. The body produces the hormone oestrogen which stimulates the growth of a protective lining inside the uterus to cushion the baby in preparation of pregnancy every month.
Urban sanitation in India and the need to look at Brazil