Divergent Changes In Serum Sterols During A Strict Uncooked Vegan Diet In Patients With Rheumatoid Arthritis(1)

This study examined how a strict raw vegan diet (called a "living food" diet) affected cholesterol and other blood fats in 29 people with rheumatoid arthritis. For 2-3 months, 16 participants ate only uncooked plant foods - no animal products, cooked foods, or processed items - while 13 others continued their regular diets as a comparison group. The researchers chose rheumatoid arthritis patients because they were highly motivated to stick to this challenging diet, since some evidence suggests plant-based eating may help reduce joint inflammation.

The raw vegan diet produced several notable changes in blood chemistry. Total cholesterol and "bad" LDL cholesterol dropped significantly, which aligns with what we know about plant-based diets and heart health. However, the most interesting finding involved plant sterols - natural compounds found in nuts, seeds, and other plant foods that can help block cholesterol absorption. The diet created an unusual shift in the ratio of two specific plant sterols (campesterol and sitosterol), suggesting the body was processing and absorbing these compounds differently than normal.

This research highlights how dramatic dietary changes can alter not just cholesterol levels, but also the complex ways our bodies handle different nutrients. While the cholesterol-lowering effects support the metabolic benefits of plant-based eating, the changes in plant sterol processing reveal that extreme diets can have unexpected effects on our biochemistry.

In clinical practice, this study reinforces that supervised dietary interventions can be powerful tools for improving metabolic health, though the extreme nature of a raw vegan diet requires careful monitoring and may not be appropriate for everyone seeking cholesterol management.