Alzheimer’s Risk (Age 40): A dementia expert says five lifestyle rules at 40 may help lower Alzheimer’s risk, focusing on brain health habits that can reduce cognitive decline later. Heat Safety: As extreme heat hits parts of the U.S. ahead of the holiday weekend, health guidance urges people to check local advisories, plan exposure, and protect themselves and loved ones outdoors. Everyday Health Checks: A urology doctor explains why peeing more or less than usual can be normal, but when frequency changes should prompt attention. Home Safety (Power Banks): A reported power bank explosion highlights lithium-battery fire risks and the need for safer charging practices. AI & Mental Health: Research finds teen use of AI chatbots for mental health advice jumped sharply in a year, raising concerns about rare but serious failures and the need for guardrails. Preventive Care (Finland): Finland is distributing a “Raised by Nature” guide encouraging nature time during pregnancy and early childhood to support immune development and learning. Blood Donation (Youth): South Africa’s blood service reports growing young donor participation, with regular donors aged 16–30 making up a large share of the panel. HIV Prevention (Long-Acting): A clinic rolls out a new long-acting HIV prevention injection option for eligible patients, aiming to make PrEP easier and more discreet. Nutrition Trend (Watermelon): New research reviews suggest watermelon juice may modestly support healthier blood pressure via natural compounds. Cancer Risk (Household Items): A radiation oncologist lists common household items and habits to reconsider to reduce avoidable cancer risk over time. Digital Health (Google): Google announces a Health CLI that can securely access Fitbit and Google Health metrics, enabling dashboards and AI-linked automation. Workplace Wellness (Loneliness): A survey finds many office workers feel lonely at work, pointing to pandemic-era communication shifts and hybrid/higher in-office time as possible drivers.