This is the type of vitamin D that circulates in the blood. Itâs considered a good reflection of how much vitamin D youâve absorbed from sun exposure and taken in from foods. Levels of vitamin D are expressed in nanomoles/liter (nmol/L) or nanograms/milliliter (ng/mL). According to the Office of Dietary Supplements (ODS), the results can indicate the following:
Fats slow down the digestive system, giving Thanksgiving dinner plenty of time to take effect. Fats also take a lot of energy to digest, so the body will redirect blood to your digestive system to tackle the job. Since you have less bloodflow elsewhere, you will feel less energetic after eating a meal rich in fats.
For anyone with anemia, drinking coffee/tea/red wine with a meal could be problematic in that it will reduce the iron absorbed from the food consumed. After a heavy meal the body is in the process of active digestion. Which means it requires a lot of blood supply to that area. One of the reasons people feel sleepy post lunch is because of this.