Objective: To study the relationship between genetic polymorphism of cytochromes P4502E1 RsaⅠand smoking,alcohol drinking habit with the susceptibility of rectal cancer.

In this article, the author analyzes the differences between Japanese and Chinese food cultures from three perspectives: the way to entertain guests, the way to cook dishes and the way to greet each other, and then puts forward some healthy food habits.

Through investigation to 108 simple obesity children or juvenile and 120 contrasted children or juvenile with normal weight, the significant difference in family history, food habits and behavior tendency between the two groups were found.

This research aims to know bad eating habit existing in physical education students in universities,to provide objective reference evidence to physical education.

The relationship between blood Zn,Fe,Ca and dietary habits and growth of 1125 children of 3～7 year old in urban district of Dongguan city was studied.

These are manifested in the great changes in the people s diet, such as the people s dietary habits, dietetic structure, pattern, conception and consumption, etc.