In this episode of Bedside Matters, the medicinal uses of the placenta, including its benefits for wound healing, anti-aging, and eye treatments; the negative effects of microplastics, known as "forever chemicals," on sleep and overall health: research into black widow spider venom, which could lead to the development of new anti-venoms and treatments for neurological conditions. Plus the brain’s fear response, and why some people are more affected by Halloween scares than others.