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Dairy Products May Lower Risk of Type 2 Diabetes in Men

Posted: Tuesday, May 30, 2006

Men who have a high dairy intake have a lower risk of type 2 diabetes.

"Diet and lifestyle modifications can substantially reduce the risk of type 2 diabetes," write Hyon K. Choi, MD, from Massachusetts General Hospital in Boston, and colleagues. "While a strong inverse association has been reported between dairy consumption and the insulin resistance syndrome among young obese adults, the relation between dairy intake and type 2 diabetes is unknown."

The investigators prospectively examined the relationship between dairy intake and incident cases of type 2 DM in 41,254 male participants with no history of DM, cardiovascular disease, and cancer when enrolled in the Health Professionals Follow-up Study.

During 12 years of follow-up, there were 1,243 incident cases of type 2 DM. Dairy intake was associated with a modestly lower risk of type 2 DM. Compared with men in the lowest quintile of dairy intake, the relative risk (RR) for type 2 DM in men in the top quintile of dairy intake was 0.77 (95% confidence interval [CI], 0.62 - 0.95; P for trend = .003), after adjustment for body mass index (BMI), physical activity, dietary factors, and other potential confounders.

For each serving-per-day increase in total dairy intake, there was a 9% lower risk for type 2 DM (multivariate RR, 0.91; 95% CI, 0.85 - 0.97). The corresponding RR was 0.88 (95% CI, 0.81 - 0.94) for low-fat dairy intake and 0.99 (95% CI, 0.91 - 1.07) for high-fat dairy intake. BMI did not affect this association (< 25 vs >/= 25 kg/m2; P for interaction, .57).

"Dietary patterns characterized by higher dairy intake, especially low-fat dairy intake, may lower the risk of type 2 diabetes in men," the authors write.

Source: Diabetes In Control: Arch Intern Med. 2005;165:975-976, 997-1003