London: People who prefer to eat fruit and vegetables are likely to be more optimistic thanks to higher levels of plant compounds called carotenoids in their blood, says a new research.
Previous studies have shown that high blood levels of antioxidants, of which carotenoids are one form, may be a marker of good health.
A commonly-known carotenoid is beta-carotene, found in high levels in orange fruit and green, leafy vegetables.
