The fortified food for lactating mothers supplied by Tianjin Food Research Institute was a powder made of soy-bean flour,egg,sugar and soyaoil,fortfied by calcium phosphate dibasic,riboflavin and ascorbic acid.Each package of the powder was 125 gm by weight providing 554kilocalorie,36gm protein,24gm fat and 829 mg calcim.It was given to 10 mothers,one package daily for 35 days.As aresult,both body weights and RBC of the mothers,and weights and heights of their babies were increased significantly. At the same time a marked increase in fat and calcium content of the breast milk was also noted.There was certain increment in the percentage of linoleic acid in the breast milk.The difference between the breast milk secretion before and after the supplementation was not significant.

Dietary survey in lactating mothers and analysis of composition of breast milk were performed. 73 healthy women, full term and normal delivery, 21-32 years of age, without family history of "insufficient milk secretion" or environmental, psychiatric and emotional disturbance were included in this study. 33 of them were female workers in the urban district and 40 of them were peasant women in the countryside. By comparing the daily dietary nutrient intakes of the urban and rural groups of lactating mothers with that recommended by the Chinese Nutrition Society (1981 revised), one can see that except iron and thiamine, all the others were below the standard recommended. Among these, total calories were only 82.7% and 77.3% respectively, protein 80.6% and 73.1%, riboflavin 96.7% and 41.1%, calcium 21.9% and 25.2% respectively. Intake of animal protein, total fat and fat energy ratio of the urban group were higher than that of the rural group, meanwhile the content of protein, fat and zinc in the breast milk of the urban group were also higher than that of the rural group, By stepwise regression analysis the following regression function was conducted;Y = 0.9-107 + 0.007x, Y represent the estimated protein content in the breast milk, and x, the fat energy ratio in the mothers diet. Positive correlation was seen between the dietary intake of animal protein and zinc content in the breast milk. r=0.47, p

A nutritional survey of 101 uncomplicated primigravidas and the relationship between maternal diet and infant birth weight were investigated. The maternal intake of protein, calcium, riboflavin and retinol during the pregnancy was lower than the amount that RDA suggested especially in the 2nd and 3rd trimesters. The intake of calories, fat, thiamine, riboflavin and nicotinic acid in the 2nd and 3rd trimesters were increased in compa-rision with the 1st. The correlation and stepwise regression analysis indicated that maternal intake of calories, protein, fat, carbohydrate, iron, calcium and riboflavin during pregnancy was significantly correlated to the birth weight.

Zinc, copper, manganese, cadmium, vitamin A, E and folic acid status of 36 pregnant and 40 nonpregnant women was studied. The results showed that dietary nutrient intakes of the pregnant women were more than that of the nonpregnant controls, but both of which were less than the corresponding values of the RDA. Serum zinc, folic acid and hair manganese concentrations were lower, while serum copper, cadmium, vitamin A and E were higher in pregnant women than that in nonpregnant women. The simultaneous occurrence of serum zinc decrease and cadmium increase during pregnancy may be a potential risk for the growth and development of foetus. So the interfering role of cadmium should not be neglected whenever we estimate zinc or copper status.

The serum vitamin A, vitamin E and some related indexes were determined in 90 primigravidas of the 2nd and the 3rd trimesters, their newborns and 30 non-pregnant women. The mean serum VA and VE contents of non-pregnant women were 39.9 ?g/dl and 10.3 ?g/ml respectively. Both the contents increased progressively with the advancement of pregnancy. The serum VA levels of pregnant women in the 2nd and the 3rd trimesters were 1.7 and 1.8 times as much as those of non-pregnant women respectively, and the serum VE levels were 1.2 and 1.8 times. The cord blood VA and VE levels were 22.3 ?g/dl and 3.36 ?g/ml respectively and both were lower than those of their mothers significantly. The colostrum VA content of these pregnant women was also determined and the mean VA content of colostrum was 117.8

1.5). The mean intakes of riboflavin were 1.05 mg/day in the 2nd trimester and 1.03 mg/day in 3rd. The correlation of BGRAC value and riboflavin intake (riboflavin per day, ridoflavin per 1000 kcal/day) demonstrated a significant negative correlation. The cord blood BGRAC values were in normal range, indicating that placenta may transport riboflavin from mother to fetus actively. The mean riboflavin content of colostrum was 22.9ug/dl.

In order to explore the effects of diet and nutritional factors on breast cancer incidence, a case-control study was conducted in Tianjin. The study consisted of 244 cases diagnosed between September 1986 and September 1987 and equal number of matched controls from patients other than breast cancer in general hospital.The socio-demographic data, histories of menstruation and reproduction etc were collected by interview. The interview on diet was conducted by recalling the frequencies and amounts of various foods eaten one year prior to the diagnosis' of their current diseases. Data were analysed by using a nutrient-estimate program and conditional logistic regression model, chi square test and u-test.After adjusting for confounding factors, the results showed that high fat, high calorie, high monounsaturated fatty acid and low vitamin C intakes were risk factors for female breast cancer. High fat percentage of energy and low vegetable intake were associated with increased risk for breast cancer.

Nitrogen balance of normal developed, healthy preschool children 4-7 yrs old, lodged in the kindergartens was studied. 105 preschool children were divided into 15 groups at different protein intakes ranged from 6.28g /MJ to 10.35g/MJ. Prominant correlationship was shown between the intake of protein g/MJ (x) and the retained nitrogen g/kg (y), r= 0.6709, n= 15, p

The nutritional survey was made in 184 anorexia children aged 3-7, 123 of them were treated with various measures for three months. The results indicated that the children with anorexia had low intake and deficiency in energy, protein, minerals and vitamins. Most of them had zinc deficiency, but they simultaneously had two to three nutrients deficiency.The zinc treatment could improve most patient's syndrome and nutritional status. The effect of zinc treatment with vitamines and iron preparations was better than zinc treatment only. The effect of treatment with Chinese medicine also was able to cure the children with anorexia to certain extent.