I am not sure whether they compensated for BMI or used sufficient dosage. A 2000 IU/day might not be sufficient as the amount required depends on the current level and BMI.
From studies we know, Vitamin D accumulates in fat cells before it is available for bodily functions, so unless the dosage was adjusted for BMI, the experiment might not have been done on an equal footing for all participants.
How do we know that Vitamin D accumulates in fat cells? When someone loses weight, the Vitamin D level improves dramatically despite not having ingested any Vitamin D or made from sunlight.
I am not sure whether they compensated for BMI or used sufficient dosage. A 2000 IU/day might not be sufficient as the amount required depends on the current level and BMI.
From studies we know, Vitamin D accumulates in fat cells before it is available for bodily functions, so unless the dosage was adjusted for BMI, the experiment might not have been done on an equal footing for all participants.
How do we know that Vitamin D accumulates in fat cells? When someone loses weight, the Vitamin D level improves dramatically despite not having ingested any Vitamin D or made from sunlight.