Thyroid function tests are blood tests that check the levels of the hormones (chemicals) made by the thyroid gland. Some thyroid function tests also check the level of a hormone made by the pituitary gland in the brain, which acts on the thyroid gland.hyroid function tests are blood tests that check the levels of the hormones (chemicals) made by the thyroid gland. Some thyroid function tests also check the level of a hormone made by the pituitary gland in the brain, which acts on the thyroid gland.
Yes, high intakes of some forms of vitamin A can be harmful. Getting too much preformed vitamin A (usually from supplements or certain medicines) can cause dizziness, nausea, headaches, coma, and even death. High intakes of preformed vitamin A in pregnant women can also cause birth defects in their babies.
Cravings occur frequently during pregnancy, but certain cravings, like chomping on ice, may indicate something potentially more serious than a craving for pickles and ice cream. An urge to eat non-nutritive substances, a condition called pica, can occur in pregnant women with low iron levels.ica in Pregnancy. The desire to eat ice is just one type of craving seen during pregnancy. Women may also crave starch, dirt, clay or paper. Women who eat ice during pregnancy may do so because it soothes the sore and irritated tongue often seen in iron deficient patients, a 2007 Los Angeles Times article suggests.