The topic of 'Weight loss and maintenance' is closely related to the insights shared in the two podcast episodes provided.

In the first episode, Episode 157: Don Layman on the role of dietary protein in muscle, health, and disease, Dr. Donald Layman, an expert on dietary protein, discusses the importance of adequate protein intake, particularly for older adults, in order to maintain muscle mass, metabolic health, and overall longevity. He emphasizes the role of leucine and resistance exercise in regulating protein synthesis, which is crucial for preserving lean muscle mass during weight loss efforts.

The second episode, Dr. Layne Norton: The Science of Eating for Health, Fat Loss & Lean Muscle, features Dr. Layne Norton, an expert in nutrition and fitness, who provides insights on various strategies for weight loss, including calorie tracking, monitoring progress, and making adjustments. He also highlights the significance of consistency, hard work, and embracing challenges, as well as the importance of adherence and lifestyle changes for long-term weight maintenance.