
If we take the tolerance on different types of foods as ONE OF measurements of our physical health, the tolerance on different cultures and ideas could also be one of measurements of mental health.
By my own observation, most Chinese people oversea who accept western foods are those with great physical health. On the contrary, those who do not or cannot accept western foods are either physically unhealthy or, at older age (not those Chinese Americans who grew up here, but those who immigrated here at relatively older age). So if my observation is valid, the same rule can be applied to our mentality: the healthy minds are always open to different ideas or cultures with objective understanding, not rejection.