An October 2017 study found that, “those who consumed the least vitamin K1- found in spinach, cabbage, iceberg lettuce and olive oil - were at 3.3 times greater risk for an unhealthy enlargement of the major pumping chamber of their heart”Source: EurekAlert!, the online, global news service operated by AAAS, the science society.

For the Tibb (Islamic Medicine) food qualities of the foods mentioned see:food qualities