04/21/2026
Healthy relationships with grandparents provide children with a unique “buffer effect” that shields them from the harmful impacts of stress and lowers the risk of depression by roughly 30%. Research from institutes like Harvard’s Center on the Developing Child suggests that a stable, caring relationship with a non-parental adult helps regulate a child’s nervous system, fostering emotional resilience.
To elaborate, grandparents often provide a different type of support than parents, which contributes to long-term mental health. For example, grandparents often offer a “safe harbor” where children feel understood and valued without the immediate pressure of daily parental expectations or discipline.
Also, hearing family stories about overcoming part hardships helps children develop a stronger sense of identity and “narrative coherence”, which increases their ability to cope with current stressors. Grandparents also act as a “hype machine” providing enthusiastic encouragement that builds a child’s confidence and self-worth. For children whose parents may struggle with depression, a strong bond with a grandparent an actually “break the chain” of transmission, protecting the child from developing similar symptoms.
These interactions trigger measurable changes in a child’s biology. For instance, positive interactions-such as sharing meals, reading together, or simple play-have been shown to reduce levels of cortisol, the body’s primary stress hormone. The warmth and affection in these bonds also trigger the release of oxytocin (the “love hormone”), which promotes feelings of calmness and helps regulate the nervous system.
Children often “borrow” the calm of an older adult. Grandparents, who may have more patience and fewer daily responsibilities, can provide a steady nervous system that helps soften a child’s own stress response. Furthermore, the presence of an involved grandparent can improve a child’s environment reducing the stress of the parents. When grandparents assist with childcare, it can lower a mother’s or father’s parenting stress, which in turn leads to a more stable and less reactive home environment for the child.
PMID: 37744417, 41258607