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The grandmother hypothesis is a hypothesis to explain the existence of menopause in human life history by identifying the adaptive value of extended kin networking. It builds on the previously postulated "mother hypothesis" which states that as mothers age, the costs of reproducing become greater, and energy devoted to those activities would be better spent helping her offspring in their ...
Because life expectancy is longer and people are taking their time in getting around to "adulting," the story of the 40s is one of extended youth more than a transition into old age.
Menopause is one of the most challenging phases of a woman's life, so it's natural to gravitate towards goodies that make us feel better in the moment, but that may not be the best idea.
Here’s an important distinction to make, per Dr. Goldman: Perimenopause is a stage, while menopause is a single moment that you reach exactly 12 consecutive months after your last menstrual period.
In England in the 13th–19th centuries with life expectancy at birth rising from perhaps 25 years to over 40, expectation of life at age 30 has been estimated at 20–30 years, [166] giving an average age at death of about 50–60 for those (a minority at the start of the period but two-thirds at its end) surviving beyond their twenties.
2003 US mortality table, Table 1, Page 1. In actuarial science and demography, a life table (also called a mortality table or actuarial table) is a table which shows, for each age, the probability that a person of that age will die before their next birthday ("probability of death").