Grief or Relief? Dyadic loneliness and biological health after mid-to-late life widowhood.

Deceased dyadic partner's pre-loss loneliness was associated with lower (healthier) post-loss levels of Cystatin C among recently widowed adults.

• Cystatin C is described as a marker of kidney function.
• The sample included 343 recently widowed adults and 13,205 continuously partnered adults across two waves of SHARE data (2013-2015).
• This association was unique to the recently widowed and did not apply to continuously partnered individuals.
• The effect did not vary by age based on the reported findings.

Deceased dyadic partner's pre-loss loneliness was associated with lower (healthier) post-loss triglyceride levels among recently widowed adults, but this effect was attenuated with age.

• Triglycerides are described as a marker of cardiovascular health.
• The association between deceased partner's pre-loss loneliness and healthier triglyceride levels was stronger among recently widowed adults in midlife.
• The effect on triglycerides was attenuated with increasing age.
• This effect was unique to the recently widowed and did not apply to continuously partnered individuals.

Deceased dyadic partner's pre-loss loneliness was associated with poorer self-rated health among recently widowed adults in midlife, with this effect attenuated with age.

• The association between deceased partner's pre-loss loneliness and poorer self-rated health was observed specifically among midlife widow(er)s.
• The effect on self-rated health was attenuated with increasing age.
• Self-rated health was examined alongside three blood-based biological markers.

Deceased dyadic partner's pre-loss loneliness was not associated with post-loss levels of C-reactive protein among recently widowed adults.

• C-reactive protein is described as a marker of inflammation.
• This null finding was one of three biological markers examined in the study.
• The study used blood-based biomarker data from the Survey of Health, Ageing, and Retirement in Europe (SHARE).

The associations between deceased partner's pre-loss loneliness and post-loss biological health outcomes were unique to the recently widowed and did not apply to continuously partnered persons.

• Interaction terms were used to test whether effects differed between the recently widowed and continuously partnered groups.
• The continuously partnered sample consisted of 13,205 adults observed across the same two waves of data (2013-2015).
• The recently widowed sample consisted of 343 adults.
• These interaction findings support the interpretation that widowhood itself, as a life transition, moderates the dyadic loneliness-health association.

Having a lonely partner is conceptualized as a 'stress generator' with implications for individuals' own biopsychosocial health, consistent with dyadic biopsychosocial approaches.

• Prior research has shown that having a lonely partner is associated with one's own biopsychosocial health.
• The authors frame widowhood as potentially removing a chronic stressor (a lonely partner), which may be associated with improved biological health post-loss.
• The findings are interpreted as cohering with dyadic biopsychosocial approaches to health and a role histories approach to studying life transitions.