Studies — the evidence base

The science we build on — and the science we exist to advance.

Real, peer-reviewed, and pointing in one direction. Environment governs who develops autoimmune disease and how severely it progresses; the disease responds to daily inputs; the science therefore points toward a daily companion.

01 — The argument
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The argument, in four steps.

Real, peer-reviewed, and pointing in one direction.

01

The immune system is mostly written by environment, not genome.

02

Specific environmental exposures are causal triggers of disease.

03

The system responds — change the inputs, the disease changes.

04

So the science points to a daily companion — and in being one, BuddyRise generates the evidence the field has never had. The loop closes.

The narrow, stronger claim

This page does not claim lifestyle reverses autoimmunity. It makes a narrower, stronger claim: environment governs who develops these diseases and how severely they progress, the disease responds to daily inputs, and the science therefore points toward a daily companion — which is both what BuddyRise is and what it is built to prove.

02 — Environment writes immunity
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01 · Environment writes the immune system

The immune system is environmentally determined.

Immune phenotype is written largely by environment, not genome — and increasingly so over a lifetime.

Brodin et al.

Cell · 2015 · n = 210 twins

Systems-level analysis of 204 immune parameters across twins aged 8–82. 77% of parameters were dominated (>50% of variance) and 58% almost completely determined (>80%) by non-heritable influences. Environmental dominance increased with age, consistent with cumulative exposure.

Rothschild et al.

Nature · 2018 · n = 1,046

The gut microbiome showed no significant association with genetic ancestry; host genetics played a minor role. Genetically unrelated people sharing a household had significantly similar microbiomes, and >20% of variability tracked to diet, medication, and body measures. Microbiome data improved prediction of metabolic traits beyond host genetics alone.

03 — Causal triggers
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02 · Specific exposures are causal

Specific environmental factors are causal triggers.

It is not noise. Discrete exposures cause specific diseases. The two strongest causal datasets in the field.

Bjornevik et al.

Science · 2022 · n = 10M

MS risk increased 32-fold following EBV infection — with no comparable rise after other similar viruses including cytomegalovirus. Only one of 801 MS cases was EBV-seronegative at onset. The first compelling evidence of causality in a disease long called idiopathic.

Bounds

EBV is necessary but not sufficient — ~95% of adults are seropositive. A trigger, not a lever. Significance is methodological as much as biological: longitudinal data at scale resolved what decades of cross-sectional work could not.

Too et al. (MyEIRA)

Arthritis Research & Therapy · 2012

Smoking elevates risk of ACPA-positive RA but not ACPA-negative RA. OR 5.2 for HLA shared-epitope alleles, OR 2.2 for smoking; smokers carrying SE alleles had OR 24 versus never-smokers without SE. A strong, statistically significant gene–environment interaction. Later work supports a mucosal origin of the initiating event.

Why it matters

A modifiable lifestyle factor interacts with genotype to cause a serologically defined subset. Autoimmune disease fractionates along environmentally defined lines.

04 — The system responds
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03 · Change the inputs, the disease changes

The system responds.

Environment doesn't just shape the system. Alter it and the disease moves — at population scale and at the individual scale.

Population scale — migration

Agrawal et al.

Journal of Autoimmunity · 2019 · systematic review

Incidence and prevalence of immune-mediated inflammatory disease among immigrants differ from origin populations and shift toward host-country patterns within a generation. Move a genetically stable population into a new environment, and autoimmune risk reorganizes. Environment is a primary determinant of incidence, not a marginal modifier.

Individual scale — intervention

Levine et al. (CDED + PEN)

Gastroenterology · 2019 · n = 78

A structured dietary protocol was superior to exclusive enteral nutrition for sustained remission at 12 weeks in pediatric Crohn's — diet as first-line therapy, not adjunct.

Diet-in-MS meta-analysis

BMC Neurology · 2022 · n = 515 across 8 RCTs

Pooled dietary intervention showed reduced fatigue and improved quality of life, with no effect on the radiological course (EDSS, MRI) and no severe adverse events.

What the two scales share

This is a condition that answers to daily life. The bounds matter and we state them — the intervention evidence is strongest in IBD, modest in MS, and limited by small samples and short follow-up. But the direction is unambiguous: inputs move outcomes.

Mechanism

Dietary fiber feeds microbial production of short-chain fatty acids, which regulate the Th17/Treg balance central to autoimmune pathology via HDAC inhibition and GPCR signaling. The pathway from daily input to immune tone is biological, not correlational.

05 — The gap
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04 · What the field is missing

Everything above was measured in snapshots.

The causal work is longitudinal at the level of a diagnosis, never at the level of a day. No dataset connects daily exposures — food, sleep, stress, medication, symptoms — to disease course at scale, in real life, over years. That is the missing layer, and it cannot be bought retroactively.

Clinics

~1 hour a year, episodic, no daily context.

Wearables

Continuous, but no autoimmune context.

Registries

Outcomes without the inputs that moved them.

06 — What we advance
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05 · The loop closes

BuddyRise is the daily companion the science points to.

By being the intervention, BuddyRise produces the longitudinal record the field has never had: daily symptom, energy, medication and lifestyle logs, plus monthly PROMIS measures, across a growing multi-country cohort. Every day of operation is a day of record no later competitor can recover.