Table 2. Comparison of predicted and measured body burdens of 137Cs for three atolls in the Marshall Islands. Predicted 157Cs adult body burdensin pCi LLNLdiet model Atoll Imports available Bikini 5.5 Utirik 0.043 0.19 Rongelap Imports unavailable 11 0.42 0.098 BNL diet* ~20 0.58 Measured 137Cs body burdens in pCi in 19780 2.4 (M);1.7 (F) 0.18 0.17 (A) 0.053 (A) 4 Naidu et al., 1981. b (M) stands for male, (F) stands for female, and (A) stands for adult; BNL data, (Lessard et al.,/1980a, 1980b; Miltenbergeret al., 1980). Also listed are the kilocalories per day (kcal/d) . ’ world this is quite unrealistic. The demand is intake for the diet model when imported foods are both available and unavailable. The intake of 1450 g/d including milk products in our diet model when imported foods are available is higher by about 200 to 400 g/d than the results from the U.S. and Japan surveys. The 3003 kcal/d in the diet model exceeds the U.S. average by a little more than 1000 kcal/d. The average recommended allowances for caloric intake range from 2000 to 3200 kcal/d, and individual recommended allowances from 1600 to 4000 kcal/d (Committee for Revision of the Canadian Dietary Standard, 1964; Food and Agricultural Organization, 1957; ICRP, 1975; National Academy of Science, 1980). It appears that the U.S. population average intake seldom reaches these high recommended levels. This comparison showsthat our diet model, based upon the MLSC surveyat Ujelang Atoll, is _ hot seriously at variance with the U.S. and Japanese data for g/d intake or for total daily calories consumed. It appears likely that the overall error is in the conservative direction of overestimating total intake. The estimates for “Imported Foods Unavailable” scenario (Tables 2 and 3) are based upon the assumption that no imported present, suppliers and commercial transport are available, and the people have cash in hand. Even though resupply schedules may be somewhaterratic, inventories of imported foods are expected to be such that the total absenceof imported foods from the diet is most unlikely. A final consideration for the diet model is the predicted amount of calcium. Dietary calcium hasto be considered because most models for 90Sr dosimetry depend onstrontium/calcium ratios (Papworth and Vennart, 1973, 1984; Bennett, 1973, 1977, 1978; Cristy et al., 1984; Leggett et al., 1982). Generally, the models are designed based on the assumptionthat the daily intake of calcium is about 0.9 g, as it is in the United States and Europe. The estimated calcium intake for the diet model is 0.85 g/d, which we believe validates the applicability of the model for Sr dosimetry. A few general conclusions can be drawn from evaluating all the available data on dietary habits in the Marshall Islands. 1. Coconut meat and fluid consumption is the major source of !37Cs intake in the diet model; the diet model does predict the 137Cs burden observed in actual whole-body counting of the adult population for twoatolls. 2. The dietary habits are, to a degree, atoll specific and should be generalized es} foods are available; that is, people would consume only local foods for their entire lifetime. Our observation is that in today's EES mM i ~ & from one atoll to another only when .