an English essay on periods or menstrual flow
Answers
The first period, a point in time known as menarche, usually begins between the ages of 12 and 15.[1] Menstruation starting as young as 8 years would still be considered normal.[2] The average age of the first period is generally later in the developing world, and earlier in the developed world.[3] The typical length of time between the first day of one period and the first day of the next is 21 to 45 days in young women. In adults, the range is between 21 and 31 days with the average being 28 days.[2][3] Bleeding usually lasts around 2 to 7 days. Periods stop during pregnancy and typically do not resume during the initial months of breastfeeding.[2] Menstruation stops occurring after menopause, which usually occurs between 45 and 55 years of age.[4]
Up to 80% of women do not experience problems sufficient to disrupt daily functioning either during menstruation or in the days leading up to menstruation. Symptoms in advance of menstruation that do interfere with normal life are called premenstrual syndrome (PMS). Some 20 to 30% of women experience PMS, with 3 to 8% experiencing severe symptoms.[5] These include acne, tender breasts, bloating, feeling tired, irritability, and mood changes.[6] Other symptoms some women experience include painful periods and heavy bleeding during menstruation and abnormal bleeding at any time during the menstrual cycle.[2] A lack of periods, known as amenorrhea, is when periods do not occur by age 15 or have not re-occurred in 90 days.[2]
Women have more periods now than in the past, because until the advent of contraception and bottle-feeding, women were either pregnant or breastfeeding for much of their lives. Also, poor diet and hard work meant that until the 20th century, most girls did not reach the menarche – the first period – until 17 or 18 years. The average age of menarche has dropped over the past century to 12.5 years