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Diet Science
Diet Science

Diet Science

Diet Science is a fun 7 to 8 minute weekly program with insights and straight scoops on today's health and diet issues from Dee McCaffrey, CDC. Dee is an Organic Chemist who lost 100 pounds, nearly half her body weight, and has kept it off for 20 years by staying away from processed foods. She's the author of The Science of Skinny, released by Perseus June 2012, and The Science of Skinny Cookbook, which was released December 2014.

Available Episodes 10

Why do people regain weight more quickly than expected after successfully losing it? Research shows that once someone has been overweight or obese, the genes in their fat cells undergo changes, creating a "memory" of the overweight state. This makes it easier for the body to return to that state. Listen in this week as Dee discusses this fascinating research, and what it means for long term weight loss maintenance.

Reference:

Hinte, L. C., Castellano-Castillo, D., Ghosh, A., Melrose, K., Gasser, E., Noé, F., Massier, L., Dong, H., Sun, W., Hoffmann, A., Wolfrum, C., Rydén, M., Mejhert, N., Blüher, M., & Von Meyenn, F. (2024). Adipose tissue retains an epigenetic memory of obesity after weight loss. Nature, (2024). https://www.nature.com/articles/s41586-024-08165-7

Reducing sugar intake not only protects you from the negative effects of overconsumption but also offers surprising benefits that you can experience quickly. Listen in this week as Dee discusses which conditions can be improved by reducing sugar—and what you can do to start limiting your sugar intake today.

Reference:

Austin, D. (2024, November 18). Giving up sugar can change your body for the better—within days. National Geographic. https://www.nationalgeographic.com/science/article/health-benefits-of-reducing-sugar

A promising change for the USDA's 2025 Dietary Guidelines to suggest limiting or avoiding ultra-processed foods has been dashed. A scientific advisory committee has declared there is not enough evidence to recommend avoiding them. Listen in this week as Dee discusses how they came to their conclusion, and why she and many experts disagree with it.

Reference: 

Callahan, A. (2024, November 14). Why the next dietary guidelines might not tackle ultraprocessed foods. The New York Times. https://www.nytimes.com/2024/11/06/well/eat/ultraprocessed-foods-dietary-guidelines.html

While its caffeine content is known for improving cognitive function, the true heroes of coffee are its antioxidants and polyphenols. These compounds may help to ward off or reverse many chronic conditions, proving coffee to be more than just an energizing beverage.Listen in this week as Dee discusses how your morning brew might be contributing to your health in surprising ways!

Reference: 

Kolb, H., Kempf, K., & Martin, S. (2020). Health effects of coffee: Mechanism unraveled?. Nutrients, 12(6), 1842. https://pmc.ncbi.nlm.nih.gov/articles/PMC7353358/

Does beer have a secret superpower? Research shows that moderate, mindful beer enjoyment might be a little healthier than you think. Listen in this week as Dee discusses the research showing the health benefits of the bitter acids and polyphenols found in the compounds that also give beer its flavor and aroma. 


Reference: 

Carbone, K., & Gervasi, F. (2022). An updated review of the genus Humulus: A valuable source of bioactive compounds for health and disease prevention. Plants, 11(24), 3434. https://pmc.ncbi.nlm.nih.gov/articles/PMC9782902/

Air fryers have become a popular kitchen tool, and they're generally considered a safer way to create a crispy texture to foods than deep frying, but they do still pose some health risks. Listen in this week as Dee offers valuable insights on the pros and cons of preparing food in an air fryer.

Reference: 

De Oliveira, V. S., Viana, D. S. B., Keller, L. M., De Melo, M. T. T., Mulandeza, O. F., Barbosa, M. I. M. J., Júnior, J. L. B., & Saldanha, T. (2024). Impact of air frying on food lipids: Oxidative evidence, current research, and insights into domestic mitigation by natural antioxidants. Trends in Food Science & Technology, 147, 104465. https://www.sciencedirect.com/science/article/abs/pii/S0924224424001419

'Tis the season for pumping up immune health with pumpkin seeds! Listen in this week as Dee explains the differences between green pumpkin seeds (also known as pepitas) and white pumpkins seeds, and howi Incorporating pumpkin seeds into your diet can give your immune system a natural boost and help your body stay resilient.

Reference: 

Hussain, A., Kausar, T., Sehar, S., Sarwar, A., Quddoos, M. Y., Aslam, J., Liaqat, A., Siddique, T., An, Q. U., Kauser, S., Rehman, A., & Nisar, R. (2023). A review on biochemical constituents of pumpkin and their role as pharma foods; A key strategy to improve health in post COVID 19 period. Food Production, Processing and Nutrition, 5(1), 22. https://pmc.ncbi.nlm.nih.gov/articles/PMC10030350/

Grounding, also known as earthing, is a simple concept that involves connecting the human body with the energy naturally present in the earth. Listen in this week as Dee dives into the science behind its potential health benefits. Learn what earthing is, how it works, and why it may help reduce inflammation, improve sleep, and support overall well-being.

References:

Oschman, J. L., Chevalier, G., & Brown, R. (2015). The effects of grounding (earthing) on inflammation, the immune response, wound healing, and prevention and treatment of chronic inflammatory and autoimmune diseases. Journal of Inflammation Research, 8, 83–96. https://doi.org/10.2147/JIR.S69656

Sinatra, S. T., Sinatra, D. S., Sinatra, S. W., & Chevalier, G. (2023). Grounding - The universal anti-inflammatory remedy. Biomedical Journal, 46(1), 11–16. https://doi.org/10.1016/j.bj.2022.12.002

There is scant scientific evidence that compounds found in nightshade vegetables—such as tomatoes, potatoes, peppers, and eggplants—aggravate the pain and inflammation of arthritis. However, some people with arthritis feel that eating nightshades make their condition worse...and decades of research by a horticulture professor at Rutgers University may explain why. Listen in this week as Dee dives into the science behind the connection and examines whether nightshades truly contribute to inflammation and joint pain. 

References:

Childers N.F., & Margoles M.S. (1993). An apparent relation of nightshades

(Solanaceae) to arthritis. Journal of Neurological and Orthopedic Medical

Surgery, 12, 227-231.

Krasowski, M. D., McGehee, D. S., & Moss, J. (1997). Natural inhibitors of cholinesterases: Implications for adverse drug reactions. Canadian Journal of Anaesthesia, 44(5 Pt 1), 525–534. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2877586/


Unlike cow milk, camel milk has low levels of lactose, fat, and cholesterol, and is naturally non allergenic. Once only available in the middle east and Africa, farmers in the U.S. are now supplying this nutritious mil to Americans. Listen in this week as Dee explores its unique nutritional profile, including essential vitamins, minerals, and its potential to boost immunity and improve digestion. 

References:

Ombarak, R. A., Hussein, E. O. S., Suliman, G., Alhimaidi, A. R., Ammari, A. A., Ba-Awadh, H., Taha, A. E., El-Tarabily, K. A., & Abd El-Hack, M. E. (2021). Nutritional, antimicrobial and medicinal properties of camel’s milk: A review. Saudi Journal of Biological Sciences, 28(5), 3126–3136. https://doi.org/10.1016/j.sjbs.2021.02.057