![Intelligent Medicine show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/078/440/small/intelligent-medicine.jpg)
Summary: Common bug-killers cause early puberty in young boys; Do eggs cause dementia or Alzheimer's? Deep sleep may be the key to healthy old age; Sleep trackers may contribute to "orthosomnia"; Ostinol vs. bone loss; Are chemical additives, not nicotine, responsible for the harmful effects of cigarettes; Going gray early means you're at an increased risk of heart disease.