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Impact of Body Mass Index on Obesity-Related Cancer and Cardiovascular Disease Mortality; The Japan Collaborative Cohort Study

Journal of Atherosclerosis and Thrombosis, ISSN: 1880-3873, Vol: 29, Issue: 10, Page: 1547-1562
2022
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New Obesity Data Have Been Reported by Researchers at Nagoya University (Impact of Body Mass Index On Obesity-related Cancer and Cardiovascular Disease Mortality; the Japan Collaborative Cohort Study)

2022 NOV 15 (NewsRx) -- By a News Reporter-Staff News Editor at Obesity Daily News -- Data detailed on Nutritional and Metabolic Diseases and Conditions

Article Description

Aim: We aimed to examine the association of obesity-related cancer and cardiovascular disease (CVD) with body mass index (BMI) and the estimated population attributable fraction in lean Asians. Methods: We studied 102,535 participants aged 40–79 years without histories of cancer or CVD at baseline between 1988 and 2009. The cause-specific hazard ratios (csHRs) of BMI categories (<18.5, 18.5–20.9, 21.0– 22.9 [reference], 23.0–24.9, 25.0–27.4, and ≥ 27.5 kg/m) were estimated for each endpoint. The events considered were mortalities from obesity-related cancer (esophageal, colorectal, liver, pancreatic, kidney, female breast, and endometrial cancer) and those from CVD (coronary heart disease and stroke). Population attributable fractions (PAFs) were calculated for these endpoints. Results: During a 19.2-year median follow-up, 2906 died from obesity-related cancer and 4532 died from CVD. The multivariable-adjusted csHRs (95% confidence interval) of higher BMI categories (25–27.4 and ≥ 27.5 kg/m) for obesity-related cancer mortality were 0.93 (0.78, 1.10) and 1.18 (0.92, 1.50) in men and 1.25 (1.04, 1.50) and 1.48 (1.19, 1.84) in women, respectively. The corresponding csHRs for CVD mortality were 1.27 (1.10, 1.46) and 1.59 (1.30, 1.95) in men and 1.10 (0.95, 1.28) and 1.44 (1.21, 1.72) in women, respectively. The PAF of a BMI ≥ 25 kg/m for obesity-related cancer was −0.2% in men and 6.7% in women and that for CVD was 5.0% in men and 4.5% in women. Conclusion: A BMI ≥ 25 kg/m is associated with an increased risk of obesity-related cancer in women and CVD in both sexes.

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