Lean Red Meat and Mental Health

A recent exploratory study suggests that incorporating lean red meat into a healthy diet might be beneficial for mental health. Researchers from South Dakota State University (SDSU) assessed data from the American Gut Project, which is a significant microbiome initiative involving more than 11,000 participants.

The findings were shared as an abstract in the Current Nutrition Development Journal of Nutrition in May, focusing on 4,915 adults categorized based on their red meat consumption and overall diet quality, evaluated through the USDA’s Healthy Eating Index (HEI).

Interestingly, individuals with higher HEI scores reported lower instances of depression, PTSD, or bipolar disorder, independent of their red meat intake. Yet, those who included lean meat in a high-quality diet experienced additional advantages.

High protein intake is one key benefit associated with lean meat. It provides essential nutrients like zinc, selenium, vitamin B-12, and choline—elements that play roles in regulating mood, memory, muscle control, and other functions. Furthermore, a varied gut microbiota has been tied to these benefits.

Past research indicates that gut bacteria can produce neurotransmitters such as serotonin and dopamine, which are essential for mood management, cognitive function, stress response, and general resilience.

It’s worth noting that while lean red meat might have some drawbacks for gut health compared to chicken, the nutrition benefits observed for those maintaining a healthy diet with lean meat are compelling. Samitinjaya Dakal, an assistant professor at SDSU, emphasized the strong nutritional advantages for individuals who consume lean meat in a healthy eating context.

Notably, while this study highlights the positive aspects, it contradicts some earlier findings that associate red and processed meat with negative health outcomes. For instance, a 2020 study involving adults aged 37 to 73 connected higher red meat consumption with diminished problem-solving skills and short-term memory. Additionally, a long-term study of over 133,000 nurses indicated that consuming lean (especially processed) meats could lead to memory loss and higher dementia risk.

Dr. Jenny Shields, a clinical health psychologist, pointed out that, despite the new study’s findings, ample evidence suggests links between processed and high-fat meats to diseases like heart conditions and diabetes. She remarked that the latest research doesn’t negate previous findings but suggests that moderate consumption of lean meat might help meet nutritional needs without detrimental effects in a well-rounded diet.

Creating a balanced diet is crucial for enhancing focus, energy, and mood, according to Shields. However, she emphasized the need for additional longitudinal studies comparing diets with and without red meat to establish stronger links beyond mere correlation.

Looking forward, Dakal mentioned that future research will involve controlled studies to investigate how various dietary patterns and specific food components impact nutritional adequacy and brain health. Charain McNeil, a nutritionist involved in the study funding and with the National Cattlemen’s Beef Association, stressed the importance of evaluating lean meat within the healthy diet framework. The complete study is currently under review for publication.