有没有美国亚裔、或者健康良好者的癌症发病原因分析？

我周围的乳腺癌人群。
Don't drink, don't smoke
Healthy BMI
Light to moderate exercise
Vegetable based diet with plenty of water
Good education
Loyal to family n married partner of life
就是这样一群人得癌的并不少，有人还转移。我们在找原因