what three vitamina and minerals undergo the greatest percentage of increase during pregnacy?

To determine the three vitamins and minerals that undergo the greatest percentage of increase during pregnancy, we need to compare the recommended intake levels for these nutrients before and during pregnancy.

1. Folic Acid (Vitamin B9): Folic acid plays a crucial role in neural tube development in the embryo. The recommended daily intake of folic acid increases during pregnancy, as it helps prevent birth defects. The increase is significant, with the recommended intake for pregnant women being 600 micrograms (mcg), compared to 400 mcg for non-pregnant women.

2. Iron: Iron is necessary for the production of red blood cells and oxygen transportation. During pregnancy, a woman's blood volume expands to support fetal growth, leading to an increased demand for iron. The recommended daily intake of iron increases from 18 milligrams (mg) for non-pregnant women to 27 mg during pregnancy.

3. Calcium: Calcium is essential for the development of the baby's bones, teeth, and proper functioning of the nerves and muscles. During pregnancy, the recommended daily intake of calcium remains the same as for non-pregnant women, which is around 1000 mg. However, due to the increased absorption efficiency during pregnancy, the body can effectively utilize the calcium consumed.

Therefore, the three vitamins and minerals that undergo the greatest percentage of increase during pregnancy are folic acid, iron, and calcium. It is important to note that pregnant women should always consult with their healthcare provider to determine their specific nutrient needs during pregnancy, as individual requirements may vary.