Eating walnuts might help your heart by reducing inflammation, improving blood vessel health, and lowering stress on your body's cells.

What we've found so far suggests that eating walnuts might help support heart health by reducing inflammation, improving blood vessel function, and lowering cellular stress. Our current analysis is based on one assertion from the evidence we've reviewed. We analyzed the available information and found that one assertion supports the idea that walnuts may benefit heart health through these mechanisms [1]. This means the evidence we've reviewed leans toward a possible positive effect of walnuts on inflammation and cardiovascular well-being in adults. However, no studies or assertions in our current review refute this idea, and we have not found enough evidence to draw stronger conclusions. It’s important to note that our analysis is limited by the small amount of evidence available so far. We cannot determine how strong or consistent these effects might be across different people or diets. We also cannot say how much walnuts would need to be eaten, or for how long, to see any potential benefits. Our current understanding is based on a narrow set of data. As we review more studies over time, our analysis may change. Right now, we can only say that the evidence we’ve looked at points in a promising direction, but it doesn’t provide a complete picture. If you're thinking about adding walnuts to your diet for heart health, they may be a nutritious choice based on what we've seen so far — but they’re just one part of a bigger lifestyle puzzle.