How could diet affect Raynaud’s phenomenon?

    Written by:
    Bill Willis

    Fact-checked

    by:

    Katie Jantz, Conni Covington
    Last Updated: May 16, 2025

    There is limited research on the effect of diet on Raynaud's phenomenon, but some studies suggest that circulation-improving foods like garlic may enhance blood flow. Conversely, it is recommended to avoid caffeine-containing foods because they can reduce blood flow to the extremities.

    There haven’t been many studies specifically testing the effect of diets on Raynaud’s. However, some investigators have speculated that foods with circulation-improving properties such as garlic[1] may help to improve blood flow. Additionally, foods that contain caffeine should be avoided, because it decreases blood flow to the extremities.[2]