Maybe it's something in the gazpacho or paella, as Spain just surpassed Italy to become the world's healthiest country.

That's according to the 2019 edition of the Bloomberg Healthiest Country Index, which ranks 169 economies according to factors that contribute to overall health. Spain placed sixth in the previous gauge, published in 2017.

Four additional European nations were among the top 10 in 2019: Iceland (No. 3), Switzerland (No. 5), Sweden (No. 6) and Norway (No. 9). Japan was the healthiest Asian nation, jumping three places from the 2017 survey into fourth and replacing Singapore, which dropped to eighth. Australia and Israel rounded out the top 10 at seventh and 10th place.