Diabetes Care, Vol 21, Issue 5 828-830, Copyright © 1998 by American Diabetes Association
Do postmenopausal women with NIDDM have a reduced capacity to deposit and conserve lower-body fat?
RM Stoney, KZ Walker, JD Best, PD Ireland, GG Giles and K O'Dea
Deakin Institute of Human Nutrition, Deakin University, Melbourne, Australia.
OBJECTIVE: To compare regional body fat distribution and sex hormone status
of postmenopausal women with NIDDM with those of age- and BMI-matched
normoglycemic women. RESEARCH DESIGN AND METHODS: The regional body fat
distribution and sex hormone status of 42 postmenopausal women with NIDDM
were compared with those of 42 normoglycemic women matched for age and BMI,
who served as control subjects. Body composition was measured by
dual-energy X-ray absorptiometry, and sex hormone-binding globulin (SHBG)
and testosterone were measured in serum. RESULTS: Although the levels of
total body fat were similar between the two groups, the women with NIDDM
had significantly less lower-body fat (LBF) (P < 0.01) than the control
subjects matched for age and BMI. This pattern of fat deposition in women
with NIDDM was accompanied by an androgenic hormone profile, with decreased
SHBG concentration and an increased free androgen index (P < 0.05 and P
< 0.01, respectively). CONCLUSIONS: A reduced capacity to deposit and/or
conserve LBF may be an independent factor associated with (or may be a
marker of) the metabolic manifestations of the insulin resistance syndrome
in women with NIDDM. The possibility that the smaller relative accumulation
of LBF is a consequence of the androgenic hormonal profile should be
investigated in future studies.