A new study suggests that feeling older than your actual age may be linked to worse sleep, and the relationship could work both ways.
Researchers analyzed data from more than 3,100 adults, looking at the connection between subjective age, or the age a person feels, and several measures of sleep health. The findings indicate that the gap between how old someone feels and how old they actually are may have real effects on sleep quality.
About the study
The study included 3,177 adults with an average age of 42.8, and nearly half were women. Participants completed an online survey that collected demographic data, subjective age, and validated measures of sleep, including insomnia severity, sleep health, sleep regularity, and sleep-related daytime impairment. Depression, anxiety, and self-reported physical health were also assessed.
Age discrepancy was calculated as the difference between subjective and chronological age, divided by chronological age. A positive value meant feeling older, while a negative value meant feeling younger.
Feeling older predicts worse sleep
People who felt older than their chronological age reported more insomnia symptoms, more sleep-related impairments during the day, lower sleep health, and less consistent sleep schedules. The age discrepancy predicted all four sleep outcomes even after accounting for chronological age, sex, race, depression, and anxiety.
The researchers also explored whether sleep might explain the link between feeling older and poorer physical health. Higher age discrepancy was associated with increased insomnia, greater sleep-related impairment, and lower sleep regularity. Each of those sleep variables was in turn associated with worse self-reported physical health. Sleep appears to be one of the pathways through which feeling older takes a toll on the body.
The relationship likely runs both ways
The study establishes that feeling older predicts worse sleep, but it does not test the reverse direction. However, it is plausible that the relationship runs both ways. Poor sleep may also make a person feel older. When someone is chronically under-rested, everything feels harder, and it is easy to interpret that as aging.
If sleep and subjective age reinforce each other, improving sleep quality could be a direct way to shift how old a person feels, not just how rested they are.
How to use this research
Prioritizing sleep regularity, not just duration, is one key takeaway. The study found that sleep regularity, or how consistent sleep and wake times are, was linked to feeling older. Going to bed and waking up at roughly the same time each day, even on weekends, is one of the most impactful changes a person can make.
Sleep experts also advise not accepting poor sleep as a normal part of aging. One common and damaging assumption is that sleep naturally deteriorates with age and nothing can be done about it. The research suggests otherwise. Insomnia symptoms are treatable, and addressing them early rather than normalizing them can have downstream effects on both physical health and how old a person feels.
Reframing how one thinks about aging may also help. The study suggests that negative age perceptions may directly worsen sleep. Actively challenging the assumption that feeling older is inevitable, and recognizing that how one feels is not fixed, may be part of the solution.
Supporting sleep through daily habits is also important. Consistent exercise, stress management, and morning light exposure all support the kind of deep, regular sleep that keeps both the body and a sense of self feeling younger. These habits tend to reinforce each other, forming a feedback loop that compounds over time.
The takeaway is that the age a person feels is not just a reflection of the years lived. It may also be a signal about how well and how consistently they are sleeping. Research suggests that feeling older than one’s chronological age is tied to worse insomnia, lower sleep regularity, and greater daytime impairment, independent of actual age, depression, and anxiety. Addressing sleep quality early, rather than accepting it as an inevitable part of getting older, may be one of the most direct ways to shift both how a person feels and how their body holds up over time.
