Reciprocal links between nocturnal sleep and activities of daily living: A longitudinal study of midlife and older couples

These findings highlight clinically significant bidirectional sleep-ADL dynamics in couples, emphasizing the need to treat spouses as interdependent health units. Incorporating brief partner sleep screening and dyadic sleep or caregiver supports into geriatric and rehabilitation pathways may help mitigate downstream functional decline. Geriatr Gerontol Int 2025; 25: 1379-1388.