A pediatrician identifies five common mistakes grandparents make that can cause tension with parents. These include offering unhealthy snacks, disrupting sleep schedules, and using outdated or incorrect home remedies and medications. Dr. Nehal Shah emphasizes that while these actions stem from love, they can lead to unhealthy eating habits, poor sleep, and potential health issues for children. Open communication between generations is highlighted as key to balancing traditional care with modern medical advice.