Dr. Kevin Hall, a leading nutrition and metabolism scientist, wants to set the record straight about one of the biggest buzzwords in the wellness industry: metabolism. On his podcast, Chasing Life With Dr. Sanjay Gupta, Hall discussed three misconceptions about metabolism that show there is more to it than meets the eye.
Firstly, people with obesity do not have slow metabolisms. In fact, research has shown that those with obesity often have higher metabolic rates on average than leaner individuals. This myth likely originated from early studies where participants’ caloric intake was self-reported and may have underestimated their actual calorie consumption.
Hall attributes the persistence of this myth to outdated research methods and a lack of understanding about metabolism. However, modern technology has improved measurement accuracy, revealing that people with obesity actually have higher metabolic rates than those who are lean.
Secondly, metabolism does not slow down as we age. While it’s true that older adults may experience changes in muscle mass and fat distribution, which can impact their metabolism, these changes are not inevitable. Engaging in regular strength training and consuming enough protein can help combat the loss of lean muscle mass and promote a healthy metabolism.
Lastly, having a high metabolism is not necessary for weight loss. In fact, people who sport slower metabolisms or experience reduced metabolic rates tend to be more successful at losing weight and keeping it off. Hall’s research suggests that maintaining a stable metabolism is key to sustainable weight loss, rather than trying to boost it with supplements or other means.
By debunking these myths, Dr. Kevin Hall hopes to promote a better understanding of metabolism and its importance in our lives. Metabolism is not just about burning calories; it’s a complex biochemical process that turns food and oxygen into the very essence of who we are.
Source: https://edition.cnn.com/2025/08/06/health/metabolism-weight-loss-myths-wellness