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:
Other Health Conditions. On rare occasions, being tired after a meal or simply sleepy all the time could be a sign of another health problem. Diabetes, anemia, underactive thyroid, celiac disease, food intolerance, and sleep apnea can make post-meal drowsiness worse.
The main reason why you get sleepy after lunch is because food that you eat for lunch diverts your blood away from your brain to help with the digestion process. Your body also releases a bit of melatonin after lunch, which is a hormone that helps you fall asleep at night.Ad.. Exercise after eating your lunch. After eating, it is a good idea to get out and do some light exercise. Take a walk for a few blocks, do some basic stretches, use the stairs instead of the elevator, or do a few jumping jacks in the restroom â whatever you can think of that fits with your schedule and location.