Mark Stibich, PhD


  • Founder and Chief Scientific Officer of Xenex Healthcare Services, a company aiming to lessen the suffering caused by healthcare-associated infections
  • Behavior change expert
  • Visiting scientist at MD Anderson Cancer Center
  • Former research consultant at Columbia University 


Mark Stibich, PhD, is a former writer for Verywell Health covering longevity. He's a behavior change expert with experience helping individuals make lasting lifestyle changes.

As a researcher, Dr. Stibich has worked in Russia, Afghanistan, Mongolia, and Tajikistan to study how high risk behavior links to health, particularly in the area of HIV and drug use. He has also conducted research on the impact of acupuncture on health and examined the impact of lifestyle and attitude on chronic health conditions. He's published in journals such as Open Forum Infectious Diseases

As a consultant, Dr. Stibich works with companies in Houston, Texas, and with individuals around the world to help people make lasting changes to their habits that are focused on success and benefits. He applies a range of techniques from the behavioral and health sciences to assist clients in making healthy behavior second nature. He also consults on research studies examining high-risk behavior and health.


Dr. Stibich received his PhD in health behavior from the Johns Hopkins University School of Public Health.

A Word From Mark Stibich, PhD

Through my research and training, I have developed an approach to behavior change that draws on the most effective techniques in the scientific, psychological and coaching fields. I've applied this approach in helping individuals make lifestyle changes. You can make changes that improve your health and energy now and when you are 110. I want to help you do this by providing clear information and strategies that lead to action. On this site, you will find answers to your questions and suggestions to help make difficult changes easier.

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