Drawing on experts in sex, mental health, nutrition and addiction, the piece traces 25 years of population health through one sturdy lens: period life expectancy, the figure that tells us how long a person born today would live if today's death rates held steady.
Two moments shape that timeline. From around 2011, improvements slowed markedly — a stagnation Britain shares with France, Germany, Italy and the broader OECD, where France edged ahead by just four days per year on average. Then came the pandemic. The UK's 179,000 COVID-related deaths across 2020–21 were the largest mortality shock since World War II. By 2024, mortality had fallen back close to 2019 levels, but the pieces we still cannot fully see — long COVID, and the intergenerational echoes drawn from the 1918–19 influenza pandemic, where babies exposed in the womb may carry long-term effects — remain the quiet undertow.
What the data does to the body
In 2024, four conditions accounted for three-quarters of deaths in England: cardiovascular disease (26%), cancer (26%), respiratory disease (12%) and dementia (9%). The early 2000s brought rapid gains against cardiovascular mortality through better treatment and falling smoking rates. That progress has since stalled since 2019, slowed by fewer breakthroughs in chronic conditions like diabetes and high blood pressure, and by sustained pressure on health and social care.
The risk-factor trade is the part that lands closest to home. Adult smoking in England fell from 26% in 2001 to 11% in 2023 — a real, hard-won victory. But the proportion of adults classified as obese climbed from 20% to 30% across the same window. We swapped one population-level risk for another, and this new one carries direct consequences for mood regulation, cognitive performance, and the metabolic roots of mental health.
Where this meets your day
If you've felt your own energy dipping, your sleep fragmenting, your mood more weather-dependent — you're not falling behind. You're living in the same current the data describes. Related research out of McMaster University found that the odds of Canadians living with both a substance use disorder and a mood or anxiety disorder nearly doubled over a ten-year window — a striking reminder that mental health rarely travels alone, and that one coping pattern often makes room for another.
One grounded practice to anchor the week
The authors don't ask us to rebuild our lives overnight, and neither should we. Choose one small anchor that serves the longer version of you: a walk you take for the thinking, not the step count; a meal that asks nothing of you except nourishment; a single screen-free hour before bed so your nervous system has somewhere to land. None of these is a cure. They are the kind of small, repeatable acts that quietly rebuild the capacity we need to navigate whatever the next quarter century holds.