Grandparenting: Impact on Physical Activity, Dietary Habits, and Quality of Life

<b>Background:</b> Informal childcare supply may have a double-edged effect on grandparents' health and quality of life, as different aspects of it may exceed or subceed the capacity of the older persons, in various ways. This study aimed to assess the effect of grandparenting on physical activity, nutrition, and quality of life of older people. <b>Methods:</b> The study involved 152 grandparents ≥65 years old (69.2 ± 4.5 years). Data were collected by a self-reported questionnaire consisting of four sections: (a) sociodemographic profile, (b) physical activity assessment (IPAQ), (c) compliance with the Mediterranean diet (MedDiet score), and (d) quality of life assessment (WHOQOL-BREF). <b>Results:</b> Significant correlations were found concerning the care of grandchildren with physical activity, eating habits, and quality of life of older adults. The most notable results of regression analysis, regarding grandparenting effect, were the number of grandchildren being taken care of, which had a statistically significant negative effect on dietary habits, physical activity and quality of life, and being the only caregivers, which was positively associated with dietary habits, but negatively with the two other outcomes (all <i>p</i> < .01). <b>Conclusion:</b> The results showed that different aspects of informal childcare had statistically significant effects on dietary habits, physical activity, and overall quality of life in older people.