Brian Lenzkes, MD

Dr. Brian Lenzkes

Dr. Brian Lenzkes is an internal medicine doctor based in San Diego who has focused much of his attention on clinical nutrition. He owned his own medical practice with a group of physicians from 2004-2020 until transitioning into an independent membership-based practice, LowCarbMD San Diego. A professional speaker in the health and wellness sphere, Dr. Lenzkes also hosts the Life’s Best Medicine podcast and co-hosts the popular LowCarbMD podcast, which have a total of more than 5.3 million downloads.

Dr. Lenzkes attended UC Irvine and received a Bachelors of Science in Biology before attending University of Southern California Medical School.  After graduating in 1999, he started his Residency Program at Scripps Mercy Hospital in San Diego and extended his residency for a year to serve as Chief Resident before starting his private practice career at Internal Medicine Associates in 2004.

Voted one of San Diego’s “Top Doctors”

Dr. Lenzkes has been voted one of the “Top Doctors” in San Diego for 11 years. Even after gaining the respect of the medical community and his patients, Dr. Lenzkes felt a void as many patients with chronic conditions became more sick and required more medications. At the same time, Dr. Lenzkes battled his own weight gain while following ‘standard medical advice’.

Learning about lifestyle modifications

The extent of nutritional training from medical school, residency, and private practice is basically as follows: “Don’t eat fat; it is bad for you and clogs arteries. Take vitamins. Exercise more and eat less. Never skip breakfast, eat six small meals throughout the day so your metabolism doesn’t shut down.”

And he followed this advice his entire career. . . until he reached his highest weight in February 2017, all while working out six days a week for at least an hour and eating the recommended six small, low-fat meals daily. After struggling to maintain his pants size and waist, he would head to work to take care of patients who would ask him: “Doc, how do I lose weight?  Isn’t there a pill I could take for this?”  His response: “Don’t you think if I knew of a sure fast diet or “magic pill” I’d be doing it myself?” 

Then he found out about lifestyle modifications that actually worked, including the Ketogenic Diet and Intermittent Fasting (IF).  He was initially surprised by the available science in this area and now overwhelmed by how vast it is and how many success stories are out there with this simple but powerful diet method.

How could the medical community at large not know about this?

After numerous hours of research, conferences and implementation, Dr. Lenzkes would now love to share his knowledge and personal experiences with you. He is currently down nearly 50 pounds after making “evidence based” lifestyle changes.

We can improve or reverse metabolic diseases including Type 2 Diabetes, obesity, fatigue, and mood disorders while at the same time decreasing our risk for catastrophic diseases such as Cancer, Parkinson’s, and Alzheimer’s Disease. There is no “magic pill” but there is a path forward if we have the courage to take the first step. He would love to help you on this journey and draw you into a community of like-minded individuals seeking their best health and a better quality of life. 

Dr. Lenzkes gives lectures and workshops to private, church, school and business groups and to the general public.