The presence in the blood of a large number of carotenoids, substances that are part of most vegetables orange, make the mood more optimistic.
This is proved by the results of the study, which was conducted by researchers at Harvard school of public health. As it turned out, vegetarians are more confident in the future and have more optimism. As you know, there is a correlation between physical and psychological health.
Previously, researchers have shown that a large number of antioxidants that are present in the blood is an indicator of excellent health. Carotenoids (one of which is beta-carotene, which is found in orange vegetables and fruits, and greens) are also among the antioxidants.
Researchers studied 1,000 men and women in the age group from 25 to 74 ex years. The study was a blood on the analysis, after which volunteers were asked to answer a series of questions was, what is the attitude of the respondents towards life. The result showed that in the blood of those people who treated their future with optimism, was 13 percent more carotenoids. On this basis, the researchers concluded that eating fruits and vegetables makes people optimistic.