A diabetes survey was conducted in the same African urban township as one done eleven years previously, together with a further survey in a rural area. In the urban survey the prevalence rate rose insignificantly from 0.10 per cent to 0.28 per cent, while no diabetes was discovered in the rural study. A minimal increase of new diabetics was seen during the same period in both the medical wards and obstetric unit, but the disease has not reached the proportions seen either in Europeans or indeed in Africans from certain parts of Southern Africa. A lack of coronary artery disease in diabetes is emphasized. These findings are discussed in the light of experience elsewhere, and some etiologic factors are suggested.

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