Perut buncit berakibat gangguan ingatan

Hubungan antara obesitas dan penyakit jantung serta diabetes telah banyak diketahui. Penelitian ini mencari hubungan antara obesitas dan dementia (gangguan ingatan). Diteliti >6500 subyek, dari catatan medis 36 tahun kemudian, sebanyak 1049 pasien (15.9%) didiagnosis dementia.

 

Peneliti mendapatkan bahwa subyek dengan sagittal abdominal diameter (SAD) terbesar (the highest quintiles) berisiko 3 kali lebih besar untuk terkena dementia dibanding mereka dengan SAD terkecil (the lowest quintiles).

 

Bila menyertakan indeks massa tubuh, subyek obes (IMT>30) dan SAD terbesar menghadapi risiko 3,6 kali.

 

Kesimpulan obesitas sentral meningkatkan risiko dementia terlepas dari diabetes dan penyakit jantung. Mekanisme hubungan obesitas dan dementia perlu diteliti lebih lanjut.

Abstract

Neurology, September 30 2008;71:1057-1064 © 2008 American Academy of Neurology
Central obesity and increased risk of dementia more than three decades later.

R. A. Whitmer, PhD, D. R. Gustafson, PhD, E. Barrett-Connor, MD, M. N. Haan, DrPH, E. P. Gunderson, PhD and K. Yaffe, MD

From Kaiser Permanente Division of Research (R.A.W., E.P.G.), Oakland, CA; Goteberg University (D.R.G.), Goteberg, Sweden; the Department of Family Medicine (E.B.-C.), University of California, La Jolla; the Department of Epidemiology (M.N.H.), University of Michigan, Ann Arbor; and the Departments of Psychiatry, Neurology and Epidemiology (K.Y.), University of California, San Francisco.

Background: Numerous reports show that a centralized distribution of adiposity is a more dangerous risk factor for cardiovascular disease and diabetes than total body obesity. No studies have evaluated whether the same pattern exists with dementia. The objective was to evaluate the association between midlife central obesity and risk of dementia three decades later.

Methods: A longitudinal analysis was conducted of 6,583 members of Kaiser Permanente of Northern California who had their sagittal abdominal diameter (SAD) measured in 1964 to 1973. Diagnoses of dementia were from medical records an average of 36 years later, January 1, 1994, to June 16, 2006. Cox proportional hazard models adjusted for age, sex, race, education, marital status, diabetes, hypertension, hyperlipidemia, stroke, heart disease, and medical utilization were conducted.

Results: A total of 1,049 participants (15.9%) were diagnosed with dementia. Compared with those in the lowest quintile of SAD, those in the highest had nearly a threefold increased risk of dementia (hazard ratio, 2.72; 95% CI, 2.33–3.33), and this was only mildly attenuated after adding body mass index (BMI) to the model (hazard ratio, 1.92; 95% CI, 1.58–2.35). Those with high SAD (>25 cm) and normal BMI had an increased risk (hazard ratio, 1.89; 95% CI, 0.98–3.81) vs those with low SAD (<25 cm) and normal BMI (18.5–24.9 kg/m²), whereas those both obese (BMI >30 kg/m²) and with high SAD had the highest risk of dementia (HR, 3.60; 95% CI, 2.85–4.55).

Conclusions: Central obesity in midlife increases risk of dementia independent of diabetes and cardiovascular comorbidities. Fifty percent of adults have central obesity; therefore, mechanisms linking central obesity to dementia need to be unveiled.