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.
Food cravings are normal when you're expecting, and it's generally OK to give in to them. Just don't overdo it. But craving other things that aren't food, such as ice, laundry detergent, paint chips, or clay, may be a sign that you are deficient in iron or zinc.Tell your doctor right away. Eating things that aren't food is risky for you and your baby.And it could leave you lacking important nutrients.ut it works only if you take it before you get pregnant and in the first few weeks of your pregnancy. Because almost half of all U.S. pregnancies are unplanned, all women should get 400 micrograms of folic acid daily. You can get that through most multivitamins. Pregnant women should get at least 600 micrograms.