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SUBJECT: AJCN May, 2016 from Roc Nutrition Investigator

BMI is not useful. How to calculate ideal body weight!  - The equation for ideal body weight is Wt (lb)=5xBMI+[(BMI/5)x(Ht-60in)] where BMI is ideal. (You need to select your height, select ideal BMI weight in middle of white area, then calculate ideal BMI here. Ideal body weight (IBW)2 was considered as “healthy” weight and was defined according to its association with lowest mortality. It was in the late 1970s that BMI (a mathematical construct where weight is a quadratic function of height) was found to be preferable over other indexes of relative weight. Until now, both IBW and BMI have been used in clinical practice. Body-composition analysis (BCA) has a sound theoretical and methodologic basis. It is found with bioelectrical impedance analysis. Approximately 50% of overweight and 15–45% of the obese patients were considered metabolically healthy obese (MHO). By contrast, 24% of individuals within the normal BMI range have cardiometabolic risks. To avoid yesterday’s thinking, we should move away from IBW and BMI.

Getting vitamin D3 (at least 2 to 5,000 IU daily) is very important to health and colon.  Epidemiologic observations have linked an increased risk of colorectal cancer (CRC) and inflammatory bowel disease with distance from the equator. Vitamin D3 binds the vitamin D receptor (VDR) to induce nongenomic and transcriptional (or genomic) responses. Observational, mechanistic, and clinical studies have shown that calcium inhibits colonocyte hyperproliferation, increases apoptotic potential, contributes to epithelial barrier function, and is inversely correlated with inflammation and CRC risk. Further evidence suggests that vitamin D3 acts similarly. Certain clinical trials suggest that calcium and vitamin D act independently, whereas others showed evidence of positive interactions.  

Moderate consumption of coffee and tea (6 cups/day) does not harm kidneys. Low to moderate coffee consumption is not expected to be a concern for kidney health in the general population.

20% worldwide are deficient in vitamin B12 during pregnancy - Our review indicates that vitamin B-12 insufficiency during pregnancy is common even in nonvegetarian populations and that concentrations of vitamin B-12 decrease from the first to the third trimester. The pooled estimates of vitamin B-12 insufficiency were 21%, 19%, and 29% in the first, second, and third trimesters, respectively.

Long-term magnesium supplementation (350 mg/d)  improves arterial stiffness in overweight and obese adults

LINK to this month’s Table of Contents for AJCN where you can read all abstracts

- Roc, Nutrition Investigator
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