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.
Dizziness after eating is a common sign especially existing among the elderly and women, which may be triggered by various causes. Feeling dizziness after eating meals is common in the elderly, affecting about one-third of older men and women. It is not so common in younger people.This condition, also known as postprandial hypotension, can cause a dizzy feeling, or lightheadedness, which may lead to fainting or falling.izziness after eating is a common sign especially existing among the elderly and women, which may be triggered by various causes. Feeling dizziness after eating meals is common in the elderly, affecting about one-third of older men and women. It is not so common in younger people.