“The cause of spina bifida is still unknown. Researchers believe it may be a combination of genetics and the environment that causes the condition. There are some things women who are pregnant or could get pregnant can do to help prevent spina bifida, including:

• Take at least 400 micrograms of folic acid each day. Spina bifida happens early in a pregnancy, often before a woman even knows she is pregnant. All women who are sexually active should take folic acid supplements. While taking folic acid and getting the best prenatal care cannot completely prevent spina bifida, it can reduce the risk.
• Talk with your primary care physician or pharmacist. If you’re planning to get pregnant or are sexually active, understanding how any prescriptions, over-the-counter medicines or supplements could affect a potential pregnancy can help you make decisions about your care.
• Work with your provider to monitor and manage your medical conditions. If you have a condition such as Type 1 or Type 2 diabetes or are overweight, you will want to work with your OB/GYN or primary care provider before getting pregnant. Once you are pregnant, your OB/GYN may refer you to a maternal-fetal medicine specialist to get extra care during your pregnancy.
• Avoid overheating your body (such as in a sauna or hot tub), and treat any fever you may have.”

NORTON Children’s (https://nortonchildrens.com/news/news-what-is-spina-bifida/)