A survey of the food habits of businessmen staying with or away from their families, working in Tokyo, Osaka, Fukuoka and Sapporo, Japan, was carried out in September 1986. The following results were obtained. 1) Nutrient intake was as follows; 2, 200-2, 300 kcal total energy, 75-85g protein, 55-66g lipid, 260-280g non-fiber carbohydrate, 2, 500-2, 900IU retinol potency, 1.1-1.3mg thiamin, 1.3-1.5mg riboflavin, 58-77mg ascorbic acid, 370-500mg calcium, 10-11mg iron, 5, 000-5, 500mg sodium, 2, 400-2, 800mg potassium, 1, 100-1, 300mg phosphorus, 230-250mg magnesium, 14-18mg zinc, 2.4-2.8mg manganese, and about 1.2mg copper. 2) The percentages of energy intake were 15.2% for breakfast, 30% for lunch, 40-44% for dinner and 10.5% for snacks between meals on average. 3) Intakes of calcium and ascorbic acid in young businessmen away from their families were very low compared with the other groups and young businessmen were found to drink a large amount of alcohol every day.