What are the benefits of having chestnuts during pregnancy? Chestnuts are packed with vital nutrients that are essential for pregnant women. Some of them are protein, fat, calcium, iron, phosphorus, zinc and vitamins that help in regulating the blood flow and providing nutrients to muscles. Eating chestnut during pregnancy regularly can also help you have better bones and reduce fatigue. Hence, chestnuts are good to snack on during pregnancy. However, it is better to check with your doctor before including chestnuts in your pregnancy diet, as some women tend to be allergic to these nuts.