That headline is too absolute. There is no established medical evidence that ages 70–75 are universally “the hardest time of life.” People experience aging very differently.
However, this period can bring several important transitions:
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Health changes — chronic conditions and mobility problems become more common with age.
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Loss of loved ones — friends, siblings, or a spouse may die, changing social support.
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Retirement and identity changes — leaving work can alter routine, purpose, and finances.
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Greater independence concerns — driving, managing a home, or handling daily tasks may become more difficult for some people.
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Loneliness and social changes — smaller social networks can increase the risk of isolation.
At the same time, many people in their 70s report high life satisfaction and a strong sense of purpose. So 70–75 can be a period of adjustment, but it isn’t inherently the “hardest” stage of life.
