Whole grains, or how many grains you eat, are not suitable for everyone. Everyone's physique is different, and everyone's consumption is different. Eating things that are not suitable for your physique or eating more or less whole grains will make you sick.
As for the night shift, some people don't get sick for several years, and some people get sick a lot for a while.
This is mainly because of physical quality, living habits and working habits.
Some people are in good health and pay attention to aftercare and exercise after work. Not easy to get sick.
In addition, some people will pay attention to taking time to relax when they are also working at night shift. Some people don't, and there is a big gap.