indication of any disturbance tn their over-all ‘metabolism. “The weight changes are sunimarized in Table 2.3. 1 would be expected that within a period of six weeks, individuals below 16 years and particularly (hose below 8 years would gain some weight. The fact that most of them: lost weight may indicate that they received a dose of radiation suffletent to interfere with normal! metabolism. In spite of their relatively inactive Hfe and hearty appetites, most ol the adults also lost weight which may indicate some interference with their normal metabolism. ‘There is little difference in observed weights between the Rongelap and Allinginae groups. Tt appears that the difference in doses received by the two groups did not differentially atfect their body weight. Whether the failure to gain welght was connected with radtation or changes in environ- Table 2.90 WEIGHT CHANGES, RONGELAP AND AILINGINAB GROUPS Age Categories Below 7 years) Below 16 years Above 16 years Rongelap Group Number observed Number that praned {7 2d 36 4 a 14 weight Average gain (1b) 5 Spread of gain (tb 3 0.5--10.0 0.5 - 10.0 3 9 Number that lost 3.5 [-11.5 21 weight Average toss (Ib) 2 Spread of toss dh) 0.5 Per cent of group 2 5.5 0.5- 5.5 GT 4 Ob BO 8 58 that lost weight Ailinginae Group Number observed Number that gained weight 7 0 ~ Average gain (Lb) 2.7 Spread of gain (1b) Number that lost weight Average loss (Ib) Spread of loss (tb) ous 3 2-4 6 6 2 0.5--3 Per cent of group that lost weight 2 U.5-4.0 88 67 ment is open to question. Unfortunately, the weight of the individuals from Utirik was not systematically followed and no satisfactory control exists to aid in interpreting the loss in weight of the Rongelap-Allinginae group. 2.7 THE EFFECTS ON PREGNANCY Four women in the Rongelap group were pregnant when brought to Kwajalein. Two were in the first trimester, one in the second trimester, and one in the third trimester. None of these women had abnormal symptoms referable to pregnancy, and as far as can be determined pregnancy continved in a normal fashion. In the Ailinginae grovp, one woman was in the second trimester. No abnormality was detected. Fetal movements were unaffected in the individual in the third trimester. The hematologic changes of the pregnant women are listed in Table 2.4. Two individuals in the first trimester had marked depression of pla:elets but at no time was 31