For people living with Crohn’s and other inflammatory bowel diseases, symptoms don’t stay in the digestive tract. They take over and quietly erode quality of life. Over time, gut symptoms can stop being isolated and begin to influence metabolic health, energy, mood, immune health, overall quality of life, and more, as ongoing inflammation can contribute to broader disease risk.

Globally, more than 10 million people live with IBD, while approximately 1 in 10 adults experiences irritable bowel syndrome (IBS). These conditions often require long-term management, and despite advances in treatment, many individuals continue to be caught in a cycle of flare-ups, symptom management, and uncertainty. Encouragingly, new adjunctive approaches are on the horizon, as researchers explore how nutrition may be utilized alongside standard medical care.

Before diving deeper, it helps to zoom out and look at how the gut connects to, and influences, many other systems throughout the body.

WHAT IS THE GUT-IMMUNE CONNECTION?

The gut is one of the body’s most active immune organs, housing a significant portion of the immune system. Beyond nutrient absorption, it plays a central role in regulating immune responses, helping determine when inflammation is protective and when it should resolve. A healthy gut barrier supports this balance by controlling what passes into circulation and how the immune system responds.

In inflammatory bowel diseases, this regulatory system breaks down. Chronic inflammation damages the gut lining, disrupts immune signaling, and weakens the intestinal barrier. Over time, inflammation can become self-perpetuating, no longer responding appropriately to normal regulatory signals. This is why IBD is considered an immune-driven condition, not simply a digestive disorder.

HOW CAN GUT INFLAMMATION AFFECT METABOLIC HEALTH?

Immune dysregulation in the gut does not remain confined to the digestive tract; signals originating in the gut influence metabolic regulation throughout the body. Through the microbiome and gut–brain axis, the gut helps shape how nutrients are processed, how blood sugar is regulated, and how the body responds to inflammatory cues.These signals influence how your body responds to insulin, how certain gut hormones work, how fats are processed in digestion, and how your body manages energy.

When gut inflammation persists and barrier integrity is compromised, inflammatory signals may extend beyond the intestine and contribute to broader systemic effects. This overlap helps explain why researchers increasingly study gut health not only in digestive conditions, but also in relation to cardiometabolic risk, prediabetes, and type 2 diabetes.

WHAT HAS EARLY RESEARCH SHOWN AROUND NUTRITION AND GUT HEALTH?

Historically, nutrition was viewed as a way to manage symptoms rather than influence underlying disease mechanisms. That perspective is changing. Researchers are now exploring how specific nutritional patterns may interact with inflammatory pathways, immune regulation, and gut barrier integrity, especially when evaluated alongside standard medical care.

In multiple preclinical studies done in mouse models, researchers examined cycles of the Fasting Mimicking Diet (FMD) on gut inflammation, including colitis and IBD. Across these models, researchers observed overall changes associated with gut health, including reduced gut inflammation, improvements in intestinal barrier function, and shifts in immune signaling related to inflammatory balance.

REWRITING CROHN'S OUTCOMES WITH FASTING-MIMICKING NUTRITION

Expanding on this, and supported by independent research, newly published human data marks an important step forward. In an independent, open-label, randomized clinical trial led by researchers at Stanford University and published in Nature Medicine, three monthly cycles of a five-day Fasting Mimicking Diet (FMD) were evaluated alongside standard medical care in adults with mild-to-moderate Crohn’s disease.

The results were groundbreaking. Researchers reported high rates of clinical response and remission, reductions in markers associated with intestinal inflammation, and improvements observed early in the study period. Notably:

• Approximately 70% of participants in the FMD group achieved clinical response, and over 60% achieved clinical remission—rates higher than those continuing their baseline diet
  
  

• Improvements were observed early, with many participants showing changes after a single five-day cycle, and were maintained throughout the intervention period
  
  

• Significant reductions were observed in fecal calprotectin, a marker of intestinal inflammation
  
  

• Among participants not receiving Crohn’s medications at baseline, response rates were more than twofold higher compared with controls
  
  

• Changes in inflammatory lipid mediators and immune-related gene expression were consistent with reduced inflammatory activity
  
  

This growing body of research reflects a broader shift in how gut health is being understood; not as an isolated system, but as a central pillar of whole-body health.

LOOKING AHEAD: ADVANCING MEDICAL NUTRITION PROGRAMS

Building on these findings, we are developing medical nutrition programs alongside our obesity, metabolic health, prediabetes, and type 2 diabetes programs, that will provide personalized nutritional and lifestyle strategies for autoimmune-related inflammatory bowel conditions. Designed to be complementary therapy alongside standard medical care, these evolving programs continue to translate emerging science into structured, clinically guided approaches.

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