Obese individuals have over 50% less bioavailability of vitamin D compared to non-obese individuals.

“the more adapost tissue a person has the greater the sequestration of vitamin D into the fat cells in other words you take two individuals that have the same amount of you know sun exposure and other factors even skin tone and things we'll talk about in a second one of them has much OST tissue than the other they're going to have lower vitamin D all things equal because they are sequestering more of the vitamin D in their fat cell”

“there's a clear association between vitamin D deficiency and less time in the Sun but it's not that straightforward because you have other things to consider so um again because I said vitamin D is a fat soluble vitamin the more adapost tissue a person has the greater the sequestration of vitamin D into the fat cells in other words you take two individuals that have the same amount of you know sun exposure and other factors even skin tone and things we'll talk about in a second one of them has much OST tissue than the other they're going to have lower vitamin D all things equal because they are sequestering more of the vitamin D in their fat cell so obesity right off the bat is a potential uh risk factor that drives um low vitamin D”

“so obesity right off the bat is a potential uh risk factor that drives um low vitamin D”

“In obesity, large fat stores can sequester vitamin D, leading to lower serum levels of the major circulating form, 25(OH)D, despite higher total stores—resulting in nearly double the risk of deficiency compared to normal-weight individuals.”

“body fat regulates the bioavailability of vitamin D is a fat soluble vitamin is stored in the body fat the more body fat you have the less B vitamin D is bioavailable to be released into the bloodstream”

“in addition body fat regulates the bioavailability of vitamin D so vitamin D is a fat soluble vitamin is stored in the body fat the more body fat you have the less B vitamin D is bioavailable to be released into the bloodstream where then it's activated um through by the kidney and also the liver to an active steroid hormone so the more body fat you have the less vitamin D is bioavailable”

“it is also in the obese where fat soluble vitamin D has greater difficulty being released into the bloodstream obese individuals have greater than 50% less bioavailability of vitamin D compared to non obese individuals obese adults in the US had three times higher prevalence of vitamin D deficiency and 1.9 times higher prevalence of vitamin D insufficiency than non obese adults”

“In fact, there have been studies that have shown that about 50% of the vitamin D bioavailability is reduced in people that are overweight and obese.”