Adequate zinc intake may reduce stroke risk, study finds

However, even though other studies have already shown benefits for the arteries and brain, it's important to note that the article has limitations. "It's an observational study, meaning it doesn't establish a cause-and-effect relationship," says nutritionist Aline Massensini De Freitas of Einstein Hospital Israelita. "Intake was based on a two-day dietary record, which doesn't correspond to a long-term diet," she comments.

Still, the mechanisms that help explain zinc's role in neuroprotection are well established. "The mineral acts as a cofactor for antioxidant enzymes," says the nutritionist. This means it helps neutralize free radicals, reducing oxidative stress in both the brain and blood vessels.

What's more, there's evidence that it affects endothelial function, which is the inner lining of blood vessels, increasing elasticity and helping control blood pressure. "Hypertension is one of the main risk factors for stroke," emphasizes the Einstein nutritionist.

Other attributes

Although it performs many functions, one of zinc's most prominent roles is in supporting immunity. It participates in the maturation of immune system cells, such as lymphocytes, which help signal the presence of harmful microorganisms in the body.

Studies also prove its anti-inflammatory properties. "Its deficiency is associated with an increase in respiratory infections, including flu," Freitas points out. Its potential also includes its role in healing processes.