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The purpose of this study was to investigate body size and body mass relative to total fasting cholesterol, triglyceride, high density and low density lipoprotein cholesterol levels and ratios in normal controls and offspring of conjugal Type II diabetics. Height, weight, percent ideal weight, and height/weight, ponderal, body mass and F-index ratios were used in the assessment of relative body size and body mass. Correlative examination of these height-weight measures and ratios relative to blood lipid analysis demonstrated that significant relationship patterns were more common for the offspring than for the control group.An analysis of variance study utilizing ponderal and body mass indices as representative and respective measures of body size and body mass in regard to the blood lipids, corroborated the correlation results. In reference to the ponderal and body mass indices of the offspring group, many mean significant differences were found in favor of the lean and underweight in comparison to the average and desirable weight, and stout and overweight subgroups relative to all of the blood lipid levels and ratios. In contrast, few control gtoup mean significant differences between the subgroups were found. Age may also have contributed to the results obtained, since the stout and overweight subgroups were generally older than their leaner and lighter subgroup counterparts. The overall results of this study indicate that increased body size and body mass are related to increased blood lipid levels and ratios, especially in the offspring group with a high genetic risk of developing diabetes and atherosclerosis.