Abstract
Phosphorus is an essential nutrient; the adult recommended daily intake ranges from 550 to 700mg/day, with a tolerated upper limit of 4000mg/day. Phosphorus intake has increased in the general population in recent years, and simultaneously an alarming rise of type 2 diabetes incidences has been observed. No study has investigated the relationship between phosphorus intake and the risk of type 2 diabetes. To evaluate the association between phosphorus intake and incidence of type 2 diabetes. Among 71,270 women from the French E3N-EPIC cohort, 1845 cases of incident type 2 diabetes were validated during follow-up (1993-2011). Adjusted Cox proportional hazards regression models were used to calculate hazard ratios and 95% confidence intervals (95% CI) for the associations between phosphorus intake and type 2 diabetes risk, adjusted on potential confounders. The overall mean (±SD) phosphorus intake was 1477mg/day (±391mg/day). High phosphorus intake was associated with risk of type 2 diabetes. In multivariate models, compared with women in the 1st quartile of phosphorus intake (<1203mg/day), those included in the 2nd (1203-1434.0mg/day), 3rd (1434-1700mg/day), and 4th (>1700mg/day) were at a higher risk of type 2 diabetes, with a hazards ratios (95% CI) of 1.18 (1.00-1.38), 1.41 (1.20-1.66) and 1.54 (1.25-1.90), respectively. Our results may have important public health implications for dietary recommendations in the prevention of type 2 diabetes. More studies are warranted to better understand the biological mechanisms underlying this positive association.
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