Final answer:
A health promotion message is a physician's advice that emphasizes gains in health. It encourages individuals to adopt healthy behaviors or make positive changes.
Step-by-step explanation:
The physician's advice that is phrased in a way that emphasizes gains in health is called a health promotion message. A health promotion message is designed to encourage individuals to adopt healthy behaviors or make positive changes for their overall well-being. It focuses on the potential benefits and advantages of following the recommended advice.