Our mission Improving Human and Planetary Health.

Our mission is to present the evidence that the dietary pattern that best preserves both human and planetary health is based on minimally processed, whole plant foods grown using sustainable and restorative agricultural practices. The IHPH also seeks to provide educational opportunities for those who want to restore human and planetary health, create resilient, healthy communities and help transform current policy that favors high cost medical care, industrial agricultural and food production systems over people and the environment. ​

Photo of kale and other crops being grown on a farm in rows. The countryside can be seen in the background as well as a cloudy sky.

our vision A world in which human activity
supports the health of the planet
on which human health depends.


• prevent and treat chronic diseases • help shift the health care delivery focus
away from pills and procedures to disease prevention and reversal through
lifestyle behavior changes • reduce agricultural related greenhouse gas emissions
and environmental degradation • preserve and protect surface and ground fresh
water sources • help mitigate climate change through restorative agricultural
practices that increase organic matter in the soil, sequestering carbon and
preventing soil erosion • help create resilient, healthy communities

Meet the team experts and passionate people

Creating a culture of healthy food, grown sustainably, will have a positive impact human and planetary health.

Amanda McKinney, a white woman with shoulder-length brown hair, smiling.

Amanda McKinney, M.D.Founder and Executive Director

Amanda McKinney is a physician with a passion for Lifestyle Medicine and environmental issues who recognizes the intimate relationship between our food and the health of both humans and the planet. She is both a Fellow and a member of the Board of Directors of the American College of Lifestyle Medicine and is a Certified Physician Executive. She founded the Institute of Human and Planetary Health to improve human health by transforming medical education and healthcare delivery and creating healthy, resilient communities. Creating a culture of healthy food, grown sustainably, will have a positive impact human and planetary health.

David Dudley, a middle aged white man with glasses and short white hair, smiling

David Dudley, MSSustainability Coordinator

As an undergraduate, David Dudley studied biology, ecology and the romance languages before receiving his MS in Sustainble Systems in Pennsylvania. He then worked for an international environmental consulting firm studying the effects of contaminants on riparian systems. Dudley later conducted studies for the government on the effects of built environments on natural ecosystems. He went on teach Biology, Spanish and Japanese before co-founding a company that focuses on converting wastes into alternative fuels. Dudley gained insight into environmental issues through various travel experiences and completed a Permaculture Certification in Australia under David Holmgren. He appeared on a TV series on environmental education and continues to teach publicly.

Brian Depew

Brian DepewAdvisory Board Member

Brian Depew is the Executive Director at the Center for Rural Affairs, a nationally recognized advocacy and development organization headquartered in Lyons, Nebraska. In college, he immersed himself in environmental and agricultural ethics, and wrote a master’s thesis on the moral obligation to save the family farm. Today, he makes good on that obligation, and a larger obligation to all rural residents, by advocating for policies that support rural communities.

Gus Von Roenn

Gus Von RoennAdvisory Board Member

Gus Von Roenn is an advocate for permaculture and sustainable practices throughout Nebraska. He works through many organizations like the Sierra Club, Nebraskans for Solar, Nebraska Sustainability Agricultural Society, the Metro Omaha Food Policy Council and Omaha Permaculture to elevate the discussion of issues surrounding healthy food accessibility, land stewardship and entrepreneurship in low-income communities. Gus is a certified permaculture designer and is the founder of a nonprofit called Omaha Permaculture that accepts degraded, vacant land for restoration while providing space to incubate agriculture-related entrepreneurial opportunities. As an advocate for everything Permaculture and sustainability in Nebraska, he likes to help many organizations teach their constituents the limitless opportunities that create abundance in all of our communities.

Andrea Holmes, a white woman with shoulder-length blonde hair smiling at camera.

Dr. Andrea HolmesProfessor of Chemistry and Director of Cannabis Studies

Dr. Andrea Holmes is a Professor of Chemistry and Director of Cannabis Studies at Doane University, co-founder of Precision Plant Molecules in Denver, Colorado, and co-owner of A&A Apothecary, a botanical and cannabis consulting company. Dr. Holmes received her Ph.D. in organic chemistry at New York University and was a National Institutes of Health post-doctoral Fellow at Columbia University in the Department of Chemistry and Columbia Medical College, College of Physicians and Surgeons in New York City. Dr. Holmes’ passions include ballet and animal welfare. She spends her free time dancing and advocating for distressed animals and cannabis legalization.

Mark Orsag, an older white man with short grey hair, smiling in a blue polo.

Dr. Mark A. OrsagProfessor of European and Interdisciplinary History

Dr. Orsag is Professor of European and Interdisciplinary History at Doane University. Dr. Orsag received his BA from Carnegie-Mellon University, his MA from the Pennsylvania State University, and his PhD from Michigan State University. He is the current Chair of Doane University's History Department. His areas of concentration in teaching, professional presentation, and published scholarly output (13 articles and one monograph) have encompassed Ancient, European, Russian, Military, and Interdisciplinary history. As a teacher, Dr Orsag has won an unprecedented three Doane University Student Congress Teaching Awards.

His current scholarly interests are collaborative projects centered at the nexus of history and the natural sciences. This includes work with Doane University colleague Dr. Amanda McKinney, MD and Dr. DeeAnn Reeder, PhD (Biology) of Bucknell University, on the five articles that collectively comprise the “What Caused the Plague of Cyprian? A Proposed Multidisciplinary Solution to a Horrific 1,771 Year-Old Mystery” manuscript. He also is a multi-chapter lead or second author, (“The Intriguing History of Cannabis'') and serves as the contracted Editor- in-Chief for the forthcoming Cannabis: A Comprehensive Overview, a multidisciplinary/multi-author volume.

join us in protecting our #1 resource!

The IHPH is a member of the Planetary Health Alliance which is "Deciphering the links between accelerating global environmental change and human health to support robust policy making and public education around the world."

Planetary Health Alliance

The IHPH is a member of the UN Sustainable Development Solutions Network

Planetary Health Alliance