Quick summary: Being a grandparent does not increase mortality for most people, yet younger women who live with a partner or have four or more grandchildren face a substantially higher risk of death. The pattern points to accumulated role strain rather than grandchild care itself and has implications for mental health and later life well-being. Public health and family policy should therefore direct practical support towards these grandmothers while they still juggle work and multiple family roles.
Becoming a grandparent ranks among the most significant later life events for millions of people. For some women the role appears to carry a hidden cost to how long they live.
Researchers examined more than 27,000 adults aged 51 and over who already had at least one living child. They used 12 waves of the Health and Retirement Study collected in the US between 1992 and 2014 and matched the answers to official death records. The study was published in Social Science & Medicine.
Overall, grandparenthood itself showed no clear link with mortality risk in women or men after the team accounted for age, education, partnership status, hours of paid work, number of children and measures of physical and mental health. The picture changed once the analysts looked at particular groups of women.
Grandmothers younger than 65 who lived with a partner displayed a markedly higher risk of death than women of the same age who had children but no grandchildren. Women with four or more grandchildren also showed elevated mortality even after the same adjustments. The pattern did not appear among grandfathers.
The authors suggest role strain offers a plausible explanation. Younger grandmothers are more likely still to be in paid employment and often share a household with a partner who may himself need support. Coordinating contact and concern across several sets of grandchildren can add lasting emotional and practical pressure. Providing regular grandchild care, however, was not itself associated with earlier death. The extra risk remained after the researchers controlled for time spent looking after grandchildren.
The American results partly match an earlier Norwegian register study that also found higher mortality among married women who became grandmothers young or had large numbers of grandchildren. Unlike that work, the United States data revealed no comparable disadvantage for men.
The survey lacked details on the age and sex of each grandchild and could not pinpoint the exact year a woman first became a grandmother. Earlier life events, such as the age at first birth, may still influence later survival. Even with those limits the findings underline that grandparenthood is not the same experience for everyone.
Support that eases overlapping family and work demands on younger partnered women could matter as more people spend decades as grandparents.
