Himalayan Tartary Buckwheat: Jeff Bland’s Latest Bet on Food as Medicine

I first paid closer attention to Big Bold Health's Immunity Chews for a considerably less scientific reason: they are delicious.

That eventually led me back to the ingredient behind them, Himalayan Tartary Buckwheat, and from there back to Jeff Bland, whose work has influenced nutrition and integrative medicine for decades.

For those who have followed this field for any length of time, Bland needs little introduction. He was discussing systems biology, personalized nutrition and the metabolic consequences of food long before those ideas became familiar language in longevity medicine. He co-founded the Institute for Functional Medicine in 1991, previously served as Director of Nutritional Research at the Linus Pauling Institute of Science and Medicine, later founded the Personalized Lifestyle Medicine Institute and has authored more than 120 peer-reviewed scientific papers.

Following someone's work for decades does not mean accepting every conclusion, product or claim associated with it. That would run directly against our own Medicine, Not Marketing standard. It does mean recognizing the contribution. Bland has played an important role in moving nutrition away from the margins of medicine and into a more serious discussion of physiology, metabolism and chronic disease.

Food as Medicine Before It Became Marketing

“Food as medicine” has become so widely used that it can now mean almost anything. Sometimes it refers to the very sensible idea of improving diet quality. Sometimes it is attached to an expensive powder or supplement. At its worst, it is used to imply that food can replace medical treatment when it cannot.

Bland's work has generally been more substantive than the slogan. Much of his career has centered on how nutrients and foods interact with biological systems, including gene expression, metabolism, immune function, cellular signaling and the microbiome.

That framework is far less controversial today than it once was. Food is clearly more than a source of calories, protein, carbohydrate and fat. Plant foods contain thousands of compounds that are metabolized both by us and by the organisms living in our intestinal tract. Some become signaling molecules. Some alter microbial ecology. Others interact with metabolic and inflammatory pathways that are still being characterized.

Himalayan Tartary Buckwheat is interesting largely because it fits within that broader nutritional biology.

What Is Himalayan Tartary Buckwheat?

Despite its name, buckwheat is not wheat. It is a pseudocereal, a seed produced by a flowering plant related to rhubarb and sorrel, and it does not naturally contain gluten.

Tartary buckwheat, Fagopyrum tataricum, differs from the common buckwheat familiar to many Americans through pancakes and soba noodles. It has attracted particular scientific interest because of its flavonoid content, especially rutin.

Rutin occurs in a number of foods, but Tartary buckwheat can contain unusually high concentrations. It also provides quercetin and a broader group of phenolic compounds that contribute to its distinctive phytochemical profile.

Recent scientific reviews continue to identify Tartary buckwheat as one of the richer dietary sources of rutin. They also emphasize something that is easy to overlook when discussing functional foods: germination, fermentation, heating and other forms of processing can materially change both the concentration and availability of the polyphenols in the finished food.

That is one reason it is difficult to make broad claims about a food based only on the name of the plant. Variety, growing conditions, soil, sprouting and processing can all influence what ultimately reaches the plate.

HTB Activ™ and the Role of Sprouting

Big Bold Health developed a proprietary Himalayan Tartary Buckwheat ingredient called HTB Activ™ using an heirloom variety grown with farming partners in the United States. The seeds are sprouted, gently dried and milled for use in the company's food and supplement products. Big Bold Health reports that the finished ingredient contains more than 100 naturally occurring polyphenols.

The sprouting step has a reasonable scientific basis. Germination changes plant metabolism as a dormant seed begins to grow, and research on Tartary buckwheat has shown that sprouting can substantially alter concentrations of flavonoids and other bioactive compounds.

That information tells us something about the chemistry of the ingredient. It does not, by itself, establish what clinical benefit the finished product will provide in humans. That requires human studies.

Human Research Did Not Begin With Big Bold Health

Tartary buckwheat has been studied in people independently of Big Bold Health.

A randomized controlled trial published in Nutrition Research in 2016 followed 165 people with type 2 diabetes. Participants who replaced part of their usual staple food with Tartary buckwheat for four weeks experienced reductions in fasting insulin, total cholesterol and LDL cholesterol compared with the control group. The investigators did not find significant between-group differences in fasting glucose or HbA1c.

The study was short and involved people who already had diabetes, so it cannot tell us whether Tartary buckwheat prevents diabetes, reduces cardiovascular events or contributes to longer life. What it does show is that incorporating the whole food into the diet can produce measurable metabolic changes in humans.

That is useful evidence, provided it is kept within the limits of what was actually studied.

The 2024 Big Bold Health Pilot

Big Bold Health approached the subject somewhat differently in a 2024 study published in Frontiers in Nutrition.

The investigators enrolled 50 generally healthy adults in a 90-day pilot study of a polyphenol-rich supplement formulated around compounds naturally found in Tartary buckwheat. Forty participants ultimately had data included in the final analysis.

Rather than concentrating on familiar metabolic measures such as glucose or cholesterol, the researchers examined DNA methylation, epigenetic aging algorithms, estimated immune-cell populations and biological pathways associated with cellular regulation. They reported several potentially interesting changes, including differences in methylation patterns and immune-related pathways.

Big Bold Health has publicized an approximately 47% reduction in one measure of age acceleration. That figure needs to be interpreted carefully. It came from a small subgroup of participants who entered the study with faster aging according to that particular epigenetic measure. It does not mean the entire study population became biologically younger by 47%, nor does it demonstrate a 47% slowing of human aging.

The study was also small, did not include a placebo group and included researchers affiliated with Big Bold Health. Those limitations are important when deciding how much weight to place on the findings. They do not make the study meaningless. A pilot study is often intended to identify signals that can then be tested under more rigorous conditions, and in this case that appears to be what happened next.

The Larger Trial Is the One We Want to Read

Big Bold Health reports that it has now completed a randomized, placebo-controlled trial involving approximately 850 participants who received a clinical dose of sprouted Himalayan Tartary Buckwheat as HTB Activ™.

The company has described it as the largest randomized, placebo-controlled trial conducted on a single food ingredient and says the study is examining outcomes related to brain health, immunity and healthy aging.

As of September 2026, the results have not been published. Big Bold Health has indicated that publication is expected later in the year.

A trial of approximately 850 participants is substantial for this area of nutrition research, but the participant count alone will not tell us whether the ingredient works. The important questions will be found in the paper: how the trial was designed, which endpoints were prespecified, how long participants were followed, how large the observed effects were, how the statistics were handled and whether the conclusions match the data.

Until those results are available, the larger study should be viewed as encouraging evidence that the company is willing to test its ingredient rigorously, rather than as proof of an outcome we have not yet seen.

Polyphenols Are More Than Simple Antioxidants

Polyphenols were commonly described for years as antioxidants, but that label captures only part of their biology.

Rutin, quercetin and many other plant compounds are now studied for their interactions with enzyme activity, cell signaling, metabolic pathways and intestinal microbes. Many dietary polyphenols are only partially absorbed in the small intestine and continue into the colon, where the microbiome transforms them into metabolites that may behave differently from the compounds originally present in the food.

This is one reason dietary polyphenol diversity is more interesting to us than treating a single isolated antioxidant as a special molecule. Berries, herbs, spices, tea, coffee, cocoa, extra-virgin olive oil, legumes, vegetables, nuts and seeds all contribute different compounds to the diet. Himalayan Tartary Buckwheat can be another unusually rich source within that larger pattern.

There is no reason for its addition to come at the expense of dietary variety.

The Microbiome Connection

Big Bold Health also places considerable emphasis on the relationship between Tartary buckwheat and the microbiome. There is a biologically reasonable basis for that interest because fibers and polyphenols can influence microbial communities, while intestinal microbes in turn transform many plant compounds into metabolites that interact with human physiology.

This two-way relationship has become one of the more active areas of nutrition research. It helps explain why two people consuming the same food may not necessarily process all of its constituents in exactly the same way.

What has not yet been established is whether Himalayan Tartary Buckwheat produces a distinctive microbiome effect that leads to meaningful long-term clinical outcomes in otherwise healthy people. The biology is interesting, but the clinical implications are still being worked out.

Why We Carry Big Bold Health

HormoneSynergy® carries several Big Bold Health products because aspects of the company's approach fit well with how we think about nutrition. The emphasis on food matrices, phytonutrient diversity and the relationships among nutrition, metabolism, immune biology and the microbiome is consistent with a broader view of nutritional health. We also appreciate the company's willingness to invest in human clinical research rather than relying entirely on mechanistic studies or ingredient claims.

That does not mean every person needs Himalayan Tartary Buckwheat, and it certainly does not mean that someone needs every product containing it.

For people who want to incorporate it, Big Bold Health offers several different formulations.

Big Bold Health HTB Rejuvenate® Superfood is the more food-oriented option, providing a shake mix that contains protein along with HTB Activ™ and other nutritional ingredients.*

Big Bold Health Immunity Chews provide 1 gram of HTB Activ™ per two-chew serving along with vitamin C, vitamin D, magnesium and zinc.* They are convenient, and having actually tried them, I can add one observation that has nothing to do with laboratory science: they taste remarkably good.

Microbiome Rejuvenate® is formulated with HTB Activ™ alongside prebiotic, probiotic and postbiotic components for people interested specifically in gut and microbiome support.*

Immune Rejuvenate®, formerly HTB Rejuvenate®, is a more concentrated supplement formulation containing Himalayan Tartary Buckwheat together with separately quantified polyphenols including quercetin, rutin, luteolin and hesperidin.*

These products use the same core ingredient in different ways. The appropriate format depends on the reason someone is considering it, and there is no assumption that using several of them simultaneously would provide additional benefit.

Jeff Bland's Larger Contribution

The part of this story that interests us most extends beyond Tartary buckwheat itself.

Much of Bland's career has been spent making the case that food participates actively in physiology. That idea may sound unremarkable today, but nutrition was not always treated that way in medicine. It was often discussed primarily in terms of calories, body weight and deficiency prevention, with much less attention paid to nutrient signaling, metabolic individuality, inflammatory biology, environmental inputs or the interactions among physiological systems.

Bland was one of the people who pushed clinicians to think more seriously about those connections.

Functional medicine subsequently developed its own problems. Parts of the field drifted toward expensive testing, oversized supplement protocols and claims that moved well beyond the available evidence. We have criticized those practices ourselves, and doing so does not require dismissing the contributions that helped make nutrition and systems biology part of a more serious medical conversation.

Big Bold Health appears to continue that part of Bland's work by taking an unusual food, characterizing its chemistry, developing a standardized ingredient and then studying that ingredient in people. Whether the clinical results prove important remains to be seen, but the sequence is the right one.

Food Still Has to Remain Food

There is also a broader lesson worth preserving whenever a particular food attracts scientific and commercial attention.

The supplement industry has a predictable tendency to identify an interesting food, isolate its most marketable compounds, concentrate them, trademark the resulting ingredient and eventually leave consumers with the impression that the original food is no longer enough.

Himalayan Tartary Buckwheat should not be viewed that way.

A varied plant-rich diet already provides polyphenols from hundreds of sources. Berries, herbs, vegetables, tea, coffee, cocoa, nuts, legumes, seeds and extra-virgin olive oil all contribute different compounds and food matrices. Tartary buckwheat may be an unusually rich addition to that diet, but it does not make those other foods less important.

The useful part of “food as medicine” is lost when the food disappears from the conversation.

The HormoneSynergy® Take

Himalayan Tartary Buckwheat has several things in its favor. It has an unusual polyphenol profile, human dietary research already exists and the ingredient being developed by Big Bold Health is now being studied in a much larger randomized trial.

We also respect the scientific history behind the project. Jeff Bland has spent decades bringing nutrition, metabolism and systems biology into medical discussions, and much of that work influenced the direction integrative and longevity medicine later took.

At the same time, there is no need to promote the evidence beyond where it currently stands. The 2024 study was a pilot. Its epigenetic findings are interesting, but the design does not allow them to establish that HTB Activ™ slows human aging. The approximately 850-person randomized, placebo-controlled study is much closer to the kind of evidence needed to answer larger questions, and we will be interested in the results when they are published.

For now, Himalayan Tartary Buckwheat can reasonably be viewed as a nutrient-dense, polyphenol-rich food with interesting human research behind it and more substantial research underway. That is enough to justify attention without pretending that every clinical question has already been settled.

Frequently Asked Questions

Is Himalayan Tartary Buckwheat actually wheat?

No. Buckwheat is a pseudocereal and is botanically unrelated to wheat. Himalayan Tartary Buckwheat is naturally gluten-free, although people with celiac disease or food allergies should still consider manufacturing and cross-contact information for individual products.

What makes Tartary buckwheat different from ordinary buckwheat?

Tartary buckwheat contains substantially higher concentrations of several flavonoids, particularly rutin, than common buckwheat. Its phytochemical profile is the main reason it has attracted interest as a functional food.

What is HTB Activ™?

HTB Activ™ is Big Bold Health's proprietary sprouted Himalayan Tartary Buckwheat ingredient. The company uses an heirloom variety grown with U.S. farming partners, sprouts the seeds and then gently dries and mills them for use in its food and supplement products.

Has Himalayan Tartary Buckwheat been studied in humans?

Yes. Human research includes a randomized dietary trial in people with type 2 diabetes and a 2024 pilot examining a polyphenol-rich Tartary-buckwheat-based formulation and epigenetic and immune-related markers. The evidence base remains considerably smaller than that supporting established dietary patterns such as Mediterranean-style eating.

Did Big Bold Health prove that HTB slows aging by 47%?

No. The widely cited 47% figure came from a small subgroup in a 2024 pilot study who began the trial with faster aging according to one particular epigenetic measure. It was not a 47% slowing of aging across the entire study population. The study was small and did not include a placebo group.

What is the new 850-person HTB study?

Big Bold Health reports that it has completed a randomized, placebo-controlled human trial involving approximately 850 participants receiving sprouted Himalayan Tartary Buckwheat as HTB Activ™. As of September 2026, the results have not been published and are expected later in 2026.

Do I need a Himalayan Tartary Buckwheat supplement?

No. Himalayan Tartary Buckwheat can provide another source of dietary polyphenols, but it does not replace a varied diet rich in vegetables, fruit, herbs, spices, legumes, nuts, seeds and other plant foods.

Which Big Bold Health HTB product should I use?

That depends on the intended use. HTB Rejuvenate® Superfood is a food-oriented shake format. Immunity Chews provide HTB Activ™ in a convenient chewable product. Microbiome Rejuvenate® combines HTB Activ™ with ingredients directed toward microbiome support, while Immune Rejuvenate® is a more concentrated polyphenol formulation. There is no reason to assume that everyone needs more than one format.

Selected Evidence

• Institute for Functional Medicine. Our History: Susan and Jeffrey Bland and the Development of Functional Medicine.
• Wang L, et al. Tartary Buckwheat Rutin: Accumulation, Metabolic Pathways, Regulation Mechanisms, and Biofortification Strategies. Plant Physiology and Biochemistry. 2024.
• Qiu J, et al. Dietary Tartary Buckwheat Intake Attenuates Insulin Resistance and Improves Lipid Profiles in Patients With Type 2 Diabetes: A Randomized Controlled Trial. Nutrition Research. 2016;36(12):1392-1401.
• Perlmutter A, Bland JS, Chandra A, et al. The Impact of a Polyphenol-Rich Supplement on Epigenetic and Cellular Markers of Immune Age: A Pilot Clinical Study. Frontiers in Nutrition. 2024;11:1474597.
• He HJ, et al. Influence of Processing on Flavonoid Retention, Transformation, and Bioavailability in Tartary Buckwheat: A Review. Food Chemistry X. 2026.
• Big Bold Health. 2026 clinical-trial update regarding its randomized, placebo-controlled study of HTB Activ™ involving approximately 850 participants. Results pending publication.

This article is for educational purposes and is not individualized medical advice. Food and supplement choices should be considered in the context of diet, allergies, medications, medical history and individual health goals.

*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.