Sometimes parents cannot care for their children, and that duty falls to their grandparents. According to the official journal of the American Academy of Pediatrics, up to 72% of children raised by grandparents have been exposed to at least one adverse event, such as death of a parent, incarceration, substance abuse, domestic violence—another reason it may not be a walk in the park for both. Census Bureau data reveal that the number of custodial grandparents is continuing to rise. Some new studies have found that even though caregiving can be more taxing for older adults, the relationships between young and old can be rewarding and beneficial. Here is a comprehensive guide on this issue:
https://www.helpguide.org/articles/parenting-family/grandparents-raising-grandchildren.htm#