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.
Feeling Tired After a Meal Is Completely Normal. If you feel tired after a meal, thereâs a good chance itâs just your body responding to all of the biochemical changes caused by digestion. In other words, itâs completely normal. However, if the symptom is disruptive and/or changing your lifestyle habits doesnât seem to help, it might not hurt to talk to your doctor.