IGNITE Firefighters' Health

N/AActive Not RecruitingNCT06567561

Stanford University120 enrolled

Overview

Investigators hope to learn about potential dietary intervention strategies (specifically a whole-food, plant-based diet) that may help lower cancer markers in firefighters.

The purpose of the San Francisco (SF) Firefighter's Diet Study is to determine if a diet low in processed foods, mostly plant-based, with added fermented foods, can lower the risk of cancer in firefighters. We will assess this by randomly assigning SF firefighters to either a whole-food, plant-based diet or their usual firehouse meals. Participants will be followed for 12 weeks.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

NONE

Enrollment

120

Conditions

Cancer Inflammation Microbiome Immune Function

Interventions

Whole Foods Plant-Based DietBEHAVIORAL

Whole foods, predominantly plant-based diet, with the addition of fish, eggs, and fermented dairy.

Usual Firehouse DietBEHAVIORAL

Usual firehouse meals.

Eligibility

Sex: ALLMin age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Age 18+ * Active SF firefighter * Willing to consume a plant-based diet (vegetables, fruit, whole grains, legumes, etc.) * Willing to complete 4 clinic visits Exclusion Criteria: * Weight \< 110 lb * BMI \>= 40 * Self-reported uncontrolled hypercholesterolemia, hypertension or diabetes * Pregnant, lactating, or planning to become pregnant during the course of the study. * Use of any of the following drugs/supplements within the last 2 months: * systemic antibiotics, antifungals, antivirals, or antiparasitics (intravenous, intramuscular, or oral); * corticosteroids (intravenous, intramuscular, oral, nasal or inhaled); * cytokines; * methotrexate or immunosuppressive cytotoxic agents. * Chronic, clinically significant, or unstable (unresolved, requiring ongoing changes to medical management or medication) pulmonary, cardiovascular, gastrointestinal, hepatic or renal functional abnormality, as determined by medical history, Type 1 diabetes, dialysis * History of active cancer in the past 3 years except for squamous or basal cell carcinomas of the skin that have been medically managed by local excision * Unstable dietary history as defined by major changes in diet during the previous month, where the subject has eliminated or significantly increased a major food group in the diet. * Recent history of chronic excessive alcohol consumption defined as more than five 1.5-ounce servings of 80 proof distilled spirits, five 12-ounce servings of beer or five 5-ounce servings of wine per day; or \> 14 drinks/week. * Any confirmed or suspected condition/state of immunosuppression or immunodeficiency (primary or acquired) including HIV infection, multiple sclerosis, and Graves' disease. * Surgery of the GI tract, with the exception of cholecystectomy and appendectomy, in the past five years. Any major bowel resection at any time. * Regular/frequent use of smoking or chewing tobacco, e-cigarettes, cigars or other nicotine-containing products * Regular use of prescription opiate pain medication

Locations (1)

Stanford University

Palo Alto, California, United States

Outcomes

Primary Outcomes

Difference in IL-6

Difference in the 8-week change from baseline in IL-6 between the whole-food plant-based vs. usual diet groups.