Food is medicine is not a new idea. Hippocrates said it 2,500 years ago. But in the last decade it has become something more than a phrase. It has become a movement. Hospitals are prescribing produce. Medical schools are teaching culinary medicine. Governments from Brazil to Japan are rethinking dietary guidelines around whole foods as preventive care. The USDA is funding programs that put fruits and vegetables in the hands of patients, not just pamphlets. Something is shifting, because for a long time the food system has been moving in the other direction.
We are a working farm in Tennessee, not a think tank or a hospital. But this conversation needs more voices from the land, and we recognize that people are looking to farms like ours for answers. What we want to do here is lay out what food is medicine means to us at Caney Fork Farms, because we think the phrase is more complex than it usually gets treated, used differently by different people for different reasons, and the full picture deserves a closer look.
This post kicks off a summer-long series exploring what Food is Medicine means from where we stand. Over the coming months we'll be digging into the science behind soil health and nutrient density, the people in our region building a healthier food system, and the hard questions about who actually has access to this conversation. Today I want to set the table.
An Idea as Old as Civilization
The concept of food as medicine is not new. Though the exact phrasing has been debated by historians, Hippocrates is credited with articulating something close to "let food be thy medicine" around 400 BC, a signal that human beings have understood this relationship for millennia. For nearly 2,500 years, the connection held across traditions. Ayurveda, Traditional Chinese Medicine, Indigenous food systems, all of them held food and medicine as inseparable. The medical historian Henry Sigerist wrote that "there is no sharp borderline between food and drug," and that both dietary and pharmacological therapies were "born of instinct."
I first started hearing the phrase food is medicine used with any regularity around 2010. Post-COVID, it has become something close to mainstream. But here's what's worth sitting with: the idea isn't new, the rediscovery is. Western industrial medicine spent most of the 20th century severing the connection between food and health. The pharmaceutical model, the regulatory separation of food and drug, the industrialization of agriculture and the rise of processed food, all of it pushed us away from something people have known for millennia. We are now in the early stages of trying to reestablish it, and that process is messier and more political than any wellness trend suggests. It touches culture, policy, our relationship with capital, and the way we grow and value food in the first place.
What excites me about this moment, and what we want to build on this summer, is that soil health, food quality, and human and community health are not separate conversations. They are a positive feedback loop. Healthy living soils produce more nutritious food. More nutritious food builds healthier people. Healthier people and communities have more capacity to steward the land that sustains them. These aren't three pillars standing apart from each other. They are one self-reinforcing cycle.
What Does Food is Medicine Actually Mean?
The phrase gets used in at least three distinct ways, and there's a fourth that doesn't get named enough.
The first is food as a clinical healthcare intervention, the rapidly growing model integrating medically tailored meals, medically tailored groceries, and produce prescriptions to prevent and manage diet-related chronic diseases like diabetes, hypertension, and cardiovascular disease. Research published in Advances in Nutrition in 2025 puts the scale of the problem in stark terms: diet-related diseases cost the United States an estimated $1.1 trillion annually, and 1 in every 5 deaths globally in 2017 (11 million people) was attributed to an unhealthy diet (Defraeye et al., 2025). The evidence for dietary intervention as genuine medicine is growing fast. Medically tailored meal programs have been shown to reduce hospitalizations by 49% and cut healthcare costs by 16% in studied populations. This fall, we will be hosting an accredited two-day on-site training at Caney Fork Farms in collaboration with The Climate Farm School and Vanderbilt Medical School, where physicians and medical students will explore exactly this intersection. More on that soon.
The second dimension is food as preventive medicine, the vitamins, antioxidants, and phytonutrients that a well-nourished body uses to protect itself before illness takes hold. Think of it as immunization delivered daily through the plate.
The third sits on the reactive end: the use of targeted dietary intervention to support recovery from acute illness or to manage conditions already underway. These aren't separate categories so much as a spectrum that the same whole foods move along depending on context.
But there is a fourth dimension that belongs in this conversation, and it doesn't get named cleanly enough: the opposite of food as medicine is food as harm. Ultra-processed foods, chemically intensive production systems, and the chronic low-level pesticide exposure that comes with a conventional American diet are not neutral inputs. They are actively working against the body. Knowing what nourishes us is only half the picture. Knowing what undermines our health completes it.
Which brings us to access:Â food cannot function as medicine if people cannot reach it. Food sovereignty (the right of all people to healthy, culturally appropriate food produced through ecologically sound methods) is not a side conversation to this one. It is the core of it. Food deserts are not accidents of geography. They are the result of systematic disinvestment in regional food systems built to maximize throughput rather than health, leaving whole communities without meaningful access to fresh produce or quality protein. Those communities are disproportionately low-income and disproportionately communities of color. The diet-related chronic disease burden in those communities is not a coincidence. Aparna Katre and Brianna Raddatz pointed to this in their 2023 paper Low-Income Families' Direct Participation in Food-Systems Innovation to Promote Healthy Food Behaviors. Until food sovereignty is part of the Food is Medicine conversation, we're talking about medicine that only some people can afford or access.
What Does Science Say About the Food Itself?
The 2019 systematic review by Vigar et al. examined 35 studies comparing populations consuming organic versus conventional diets and concluded that "a growing number of important findings are being reported from observational research linking demonstrable health benefits with organic food consumption." Critically, clinical trials consistently showed that switching to an organic diet reduced pesticide metabolites in urine by up to 90% within days, in both adults and children. That finding alone deserves more than a footnote. We spend a lot of time talking about what food can do for us. We should also reckon with what conventional production systems are actively doing to us.
There is a reason places like Santa Cruz County, California (the heart of conventional berry production and one of the most intensive fungicide programs in American agriculture) have child cancer rates 38% above the California baseline, at 22.5 cases per 100,000 according to Dr. Valerie Bengal and data from the National Cancer Institute. Chemicals like 1,3-dichloropropene, sold under the trade name Telone and used routinely in pre-plant soil fumigation on those fields, are classified as a probable human carcinogen by international health bodies and are banned in 34 countries. They remain in wide use there.
Is regenerative always better than organic, and organic always better than conventional? Not always. But the trend is compelling. Montgomery et al.'s 2022 peer-reviewed comparison of paired regenerative and conventional farms across the United States found that regenerative practices (no-till, cover crops, diverse rotations) produced crops with an average of 34% more vitamin K, 20% more total phenolics, and 22% more phytosterols than their conventional counterparts. Regeneratively raised beef had nearly three times the omega-3 fatty acids of conventional grain-finished beef, with an omega-6 to omega-3 ratio of 1.3:1 compared to 6.2:1, a difference that carries real weight for chronic inflammation and disease risk. The mechanism appears to be soil biology itself: living, biologically active soils move nutrients into plants and animals in ways that degraded soils simply cannot.
At Caney Fork Farms, we care about this enough to use nutrient density testing as a management tool rather than simply assuming our food is good because our practices are regenerative. Our 2025 butternut squash came back below USDA benchmarks for vitamin A, B3, and copper, and we're investigating why. Our field peas tested as a good or rich source across the board, including B1 and B2 levels the USDA doesn't even have established benchmarks for yet. We want to know what we're actually growing, and that intellectual honesty is part of how we intend to contribute to this conversation.
One more piece worth noting for produce: local matters. Many of the most health-promoting compounds in fruits and vegetables (vitamins and antioxidants) begin degrading within the first week of harvest. When the average item of food in the American diet travels approximately 1,500 miles from farm to table, a meaningful share of those nutrients is already gone by the time it arrives. Supporting a local farm isn't only a values statement, it's a nutritional one. The most direct way to close that distance is a direct relationship with the farm growing your food.
The Loop Closes
What I keep coming back to is this: the conversation we're entering this summer isn't about any one of these things in isolation. It's about the relationship between them. The loop we laid out earlier isn't a diagram. It's a description of what we're trying to build. The culture that shapes how we value food, whether we understand it as something alive and relational rather than a commodity, is upstream of all of it.
"You are what you eat" is a cliché because it's true, and because it points toward something larger than diet. Food is a source of health, of medicine, of cultural identity, of connection to place and to each other. That is a fundamental right, not a luxury, not a trend. Ensuring that right is understood, defended, and extended to every corner of our community is what this series is about.
We're glad you're here. More to come.
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-Asher Wright, Farm Director
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References:
Defraeye et al. (2025), Advances in Nutrition; Montgomery et al. (2022), PeerJ; Vigar et al. (2019), Nutrients; Katre & Raddatz (2023), Nutrients; Pirog et al. (2023), Leopold Center for Sustainable Agriculture.
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