The average and individual values of the test results related to thyroid function for 52 male workers in a lead refinery were within the normal ranges. Examination of the relationship between lead exposure and function related to thyroid showed no significant results. The conclusion reached is that at the levels of atmospheric lead (0.031 to 1.008mg/m3) and blood lead (31.9±20.4μg/100g) studied, lead has no significant effect on function related to thyroid.
Food construction regarding school lunches in Suita City was studied so as observe the changes occurring over a 12 year period. The following results were obtained. 1. Those foods that increased were rice, seeds, green and yellow vegetables, fruit (1976-1979), Fish and shellfish (1980-1983) and meats (1976-1979). Those items showing a decrease were sugar, fats and oils, seasonings (1976-1979) and eggs (1980-1983). 2. other vegetables and seasonings showed a large increase and cereals, rice, peas, fruit, fats and oils and eggs were consumed only to a limited extent in summer. Cereals rice, peas and fruit showed an increase, and other vegetables and seasonings were consumed very little in winter. Consumption of fish and shellfish showed a great decrease in autumn. 3. Meats showed a large increase from 1972 to 1979, and potatoes, peas, fruit, green and yellow vegetables fish and shellfish lacked in this investigation term, compared with the food construction standard.