Influence of meals and night shifts on health.

(1) The effect of twice-daily meals on a body weight (BW) and blood pressure (BP), (2) the effect of working night shifts on BPs, and (3) a relationship between a meat diet and cedar pollinosis were statistically investigated with working men who had an annual medical examination. As a result, the effect of twice-daily meals on BW and BP was not different from thrice-daily meals on BW and BP. However, cases of twice-daily meals had larger percentages of alcohol drinkers and cigarette smokers. The night shift workers had almost the same frequency of hypertension as compared with day duty workers. A daily diet of meat including beef, chicken, and pork had a close relationship with cedar pollinosis.