The red (green and yellow) color of peppers is due to various carotenoids -- pigments such lutein and zeaxanthin -- which are considered to be central to whatev

The red (green and yellow) color of peppers is due to various carotenoids -- pigments such lutein and zeaxanthin -- which are considered to be central to whatever is particularly healthy about eating plenty of "leafy green" vegetables (and carrots). These nutrients are also highly concentrated in non 'hot' peppers like paprika. They could be involved in the studies results and really deserved a mention.