Here’s the finding, stated plainly before any of the caveats: for most people, life satisfaction does not decline in a straight line as the years pass.
It dips through midlife, hits its low point somewhere around age 47 or 48, and then climbs again, often continuing to rise well into a person’s sixties and seventies. Getting older, on average, eventually means getting happier again, not less happy.
The classic finding
The number comes from economist David Blanchflower, who analyzed well-being data covering 132 countries, developed and developing alike, drawing on roughly half a million responses.
Across nearly every country in the dataset, the same pattern showed up: well-being measured by life satisfaction, happiness, and related survey questions traced a U shape across a person’s lifetime. The low point landed at 47.2 in wealthier countries and 48.2 in developing ones, a gap small enough that the underlying pattern reads as close to universal rather than a quirk of any one economy or culture.
“There’s a midlife crisis with a low point around age 50, which was my low point of happiness, too,” Blanchflower has said of his own findings. “But there’s evidence that, for most people, things do get better from then on.” The second half of that sentence is the part that tends to get less attention than the first.
A dip at fifty sounds like bad news on its own, but the more remarkable part of the pattern is what happens afterward: happiness climbing back up through people’s sixties and seventies, in many countries surpassing where it stood decades earlier.
Nobody fully agrees on why the dip happens in the first place, and the research is honest about that. One common explanation involves expectations catching up with reality: people in their twenties tend to assume their careers, marriages, and finances will keep improving indefinitely, and midlife is often when the gap between that assumption and how things actually turned out becomes hardest to ignore.
Another points to the ordinary pile-up of midlife responsibility, supporting children and aging parents at the same time, that simply eases once one or both of those pressures lift. A third, more hopeful explanation is that people get better with practice at managing their own expectations and emotions the longer they live, regardless of what’s actually happening around them.
The data supports a dip and a recovery. It doesn’t settle which of these stories, or what combination of them, is doing the work.
A pattern that might be shifting
Here’s where the story gets more complicated, and more honest. Blanchflower’s own more recent research, published in 2025 alongside economists Alex Bryson and Xiaowei Xu, looked at newer data from 44 countries collected between 2020 and 2025, along with long-running surveys in the United States and United Kingdom stretching back decades.
What they found was that the classic U shape, at least measured through distress and despair rather than life satisfaction, has largely disappeared for the youngest adults in the sample. Instead of a midlife low point, ill-being now declines steadily with age. Young people, particularly those under 25, are reporting the highest levels of despair, not the middle-aged.
That’s not a contradiction of the original 132-country finding so much as a sign that the shape of the curve depends on when you draw it. The 2020 data captured a pattern built up over decades of survey responses. The 2025 data captures what has happened specifically since 2020, a period that includes a pandemic, a difficult job and housing market for young adults, and whatever role heavy phone and social media use plays in younger people’s daily mood, a question the researchers raise without claiming to settle.
Something has clearly changed for people currently in their teens and twenties. Whether that changes the story for people currently in midlife and beyond is a separate question, and one the newer data doesn’t answer.
What both findings actually agree on
Strip away the disagreement over where the curve starts, and the two sets of findings agree on more than it first appears. Neither one describes older adults as worse off than they used to be.
The 2025 research found ill-being declining with age, meaning older adults in the newer data are still doing relatively well, arguably even better in relative terms than before, since the group now struggling most has shifted toward the young. The reassuring half of Blanchflower’s original finding, that most people’s happiness keeps climbing well past midlife, hasn’t been overturned by anything in the follow-up research. What changed is which group needs the most attention, not whether later adulthood still tends to bring things back up.
None of this is a reason to treat either dataset as the final word. Self-reported happiness is a genuinely difficult thing to measure well, comparisons across dozens of countries and cultures carry real limitations, and a five-year window is a short amount of time to declare a decades-old pattern permanently changed. What both studies point toward, taken together, is less a single tidy curve than a moving picture: the shape of unhappiness across a life seems to depend heavily on which years someone happened to grow up in, not only on how many years they’ve lived.
That’s a less satisfying answer than a single, universal U-curve people could point to and plan their expectations around, but it’s probably a more honest one. Anyone currently in the middle of a rough patch in their forties can still take real comfort from the original finding: on average, across a huge range of countries and cultures, this specific stretch of life is disproportionately the hardest part, and most people do report things improving from here. That comfort just shouldn’t come at the cost of noticing that a different age group appears to need the same reassurance now, and isn’t yet hearing it as often.
If the part of this that lands hardest is the finding about young people’s rising despair rather than the reassuring news about later life, that’s worth taking seriously rather than filing away as a statistic. Distress that shows up as more than an ordinary rough patch is worth discussing with a doctor or a therapist, at any age, and especially in your teens and twenties, when the surrounding culture doesn’t always make that feel like an obvious first move.