indication of any disturbance tn their over-all imetabolisin.. “The welght changes are sunimarized wn Table 2.3. Ub would be expected that within a period of six weeks, individuals betow 16 years and particularly those below & years would gain some weight. The fact that most of them lost weight amay indbeate that they received a dose of radiation suffietent fo interfere with normal metabolism. Un spite of their relatively inactive Hfe and hearty appetites, mast of the adults also Jos! weight which may indicate some interterenee with tbetr normal metabolism ‘There bs little difference in observed weights between the Rongelitp and Allinginae groups. IC appears that the difference tn doses received by the two proups did not ditferentially atheet their body weight. Whether the failure to pain weight was connected with radiation or changes in environ- Vable 2.3 WRIGHT CHANGES, RONGELAP AND ALLINGINAR GROUPS Age Categories Below 7 vears Below 16 vears Above 16 years Rongelap Group 17 4 24 ” 5 0.5- 10.0 13 J 0.5 - 10.0 ey) 0.5 2 505.5 3.5 1-11.5 21 4 On x 7 a Peo cent of group 2 5.5 36 l4 » x Number observed Number that pounced wetehit Average gain db) Spread of yan (Ube Numiber that lost weight Average doss (lbp Spread of loss (ib) that lost weak Ailinginae Group Number observed Number that gamed weight 7 0 Average gain (1b) Spread of gain (lb) Number that lost we ight Average loss (Ib) Spread of loss (Ib) Per cent af group that Jost weight . Foe 3 6 2.7 2-4 6 2 0.5--3 88 2 0.5-4.0 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 tn interpreting the loss in weight of the Rongelap-Ailinginue group. 2.7 THE EFFECTS ON PREGNANCY Four women in the Roagelap 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 group, 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 arelisted in Table 2.4. Two individuals in the first trimester had marked depression of pla-elets but at no time was 31