Basil, a staple in summer salads and Italian cuisine, offers more than just flavour. According to registered dietitian Gillian Culbertson from the Cleveland Clinic, this member of the mint family is packed with vitamin K, which strengthens bones and aids blood clotting. But its benefits extend further, potentially staving off chronic diseases such as cancer, diabetes, heart disease and arthritis.
Basil leaves are rich in antioxidants, which prevent cell damage and reduce the risk of chronic conditions like arthritis, cardiovascular issues and cancer. Culbertson notes that while there is growing evidence basil could be a powerful cancer prevention tool, more human studies are needed. Previous research has shown that sweet basil prevented the growth of human colon cancer cells, and six types of basil exhibited anti-cancer properties.
For those with cancer, basil's vitamin C, zinc and iron can support immune health, according to the UT Health San Antonio MD Anderson Cancer Center. Additionally, studies indicate basil can reduce high blood pressure, improve cholesterol levels, and help manage high blood sugar, which is linked to diabetes and kidney failure.
While there is no specific recommended intake, supplements typically range from 250 to 500 milligrams. Fresh, frozen or dried leaves are also options, but should be washed and cooked before consumption. However, Culbertson warns that excessive basil consumption may interact with medications, thinning blood too much or lowering blood sugar and blood pressure excessively. She advises adding basil to the diet through food sources first and consulting a healthcare provider for specific medical conditions.
