> Obesity, for example, is a known risk factor for diabetes, and people who are obese also tend to have low Vitamin D levels, due mostly to the dilution of the

> Obesity, for example, is a known risk factor for diabetes, and people who are obese also tend to have low Vitamin D levels, due mostly to the dilution of the fat-soluble vitamin in the larger mass of adipose tissue. I didn't know this. I'm hoping that Part II addresses the long-term Vitamin D storage mechanism. Logically, since sun derived Vitamin D is accumulated during the summer and depleted during the winter, extra storage capacity might be beneficial. This is one area of research where the seasonal cycles are critical. Latitude and the date that samples are collected should be part of the dataset. Since diet and lifestyle seems to be involved, I wonder how much the phytate [1] content of the starchy staples we consume contributes to Calcium/Magnesium imbalances: > The (myo) phytate anion is a colorless species that has significant nutritional role as the principal storage form of phosphorus in many plant tissues, especially bran and seeds. It is also present in many legumes, cereals, and grains. Phytic acid and phytate have a strong binding affinity to the dietary minerals, calcium, iron, and zinc, inhibiting their absorption. It would be ironic if white rice and white bread become recommended over high fiber options. I wonder if the detrimental effects of phytates only apply during digestion, suggesting that some foods shouldn't be mixed in the same meal, or whether the binding affinity is something that occurs in aggregate independent of ingestion time. [1] https://en.wikipedia.org/wiki/Phytic_acid https://en.wikipedia.org/wiki/Phytic_acid