Her Story
About Leigh
Dr. Leigh Greathouse serves as an Associate Professor of Nutrition Sciences and Biology at Baylor University in Waco, Texas, where she leads research focused on the relationship between diet, the gut microbiome, and colon cancer prevention and treatment. Since entering the field in 2012, she has dedicated her career to understanding how microbiome interactions influence cancer development and therapeutic outcomes. Originally pursuing a path toward becoming a sports dietitian, Dr. Greathouse has maintained her credentials as a Registered Dietitian Nutritionist since 2001 while expanding her expertise into cancer biology following a personal experience that inspired her commitment to advancing cancer research.
During her postdoctoral fellowship with the National Cancer Institute at the National Institutes of Health, Dr. Greathouse transitioned into microbiome research, contributing to early investigations exploring connections between the lung microbiome and lung cancer. She later established her own research laboratory at Baylor University, where her work focuses on diet–microbiome interactions in colon cancer and the development of precision nutrition strategies. Her research combines molecular biology, epidemiology, and microbiome analysis to better understand how dietary factors can influence cancer prevention and treatment response.
Throughout her career, Dr. Greathouse has contributed to the scientific community through research presentations, grant development, peer-reviewed publications, and mentorship of emerging scientists. Her achievements include recognition through an NIH Merit Award, a Department of Defense Career Award, and multiple honors from Baylor University. She is an active member of the American Association for Cancer Research and remains dedicated to advancing innovative approaches in cancer biology. Beyond academia, she supports her community through volunteer work with her church and Meals on Wheels, guided by her values of faith, meaningful relationships, and the importance of mentorship and support.
Her Interview
Ten minutes with Leigh
01What do you attribute your success to?
I attribute my success to my personal experiences and the challenges I have faced throughout my life. My own journey with cancer profoundly shaped my perspective and inspired my commitment to advancing research in this field. Those experiences have fueled my passion, resilience, and dedication to making meaningful contributions to cancer prevention and treatment while helping improve outcomes for others.
02What’s the best career advice you’ve ever received?
The best career advice I have received is that “culture eats strategy every day for breakfast.” This perspective has reinforced the importance of building and contributing to a strong, supportive, and collaborative environment. While strategy and innovation are essential for success, a positive culture built on trust, shared values, teamwork, and respect ultimately drives lasting impact and meaningful achievement.
03What advice would you give to young women entering your industry?
My advice to young women entering this industry is to remain focused on their purpose and the impact they hope to make rather than becoming consumed by recognition, titles, or awards. Success is most fulfilling when it is rooted in passion, curiosity, and a genuine commitment to meaningful work. I encourage young professionals to take time to understand what truly motivates and inspires them beyond career achievements, as personal fulfillment and a strong sense of purpose are essential for building a rewarding and lasting career.
04What are the biggest challenges or opportunities in your field right now?
One of the greatest opportunities in my field is the transition from reactive medicine to proactive, personalized healthcare. By leveraging artificial intelligence, advanced analytics, and the wealth of existing health data, we have the potential to better predict disease risk, identify individualized treatment approaches, and improve patient outcomes. The challenge is ensuring that these technologies are developed and implemented responsibly while maintaining scientific rigor, data integrity, and a patient-centered focus.
05What values are most important to you in your work and personal life?
The values that are most important to me in both my work and personal life are maintaining a strong relationship with God, showing love and compassion toward others, and creating an environment where people feel valued and supported. I believe in the importance of being a thoughtful mentor who helps others recognize their potential, feel a sense of belonging, and continue to grow both personally and professionally. These values guide the way I lead, collaborate, and contribute to the communities I serve.
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