What Nutritionists Want You To Know About Pregnancy Load Up On Folic Acid Rich Foods “This nutrient is critical to the development of the baby’s brain and spinal cord. Intake of folic acid prevents Neural Tube Defects (NTD) like spinal bifida,” says Rebecca Lewis, R.D., nutritionist for Hello Fresh. Seek out foods like dark leafy greens (like spinach, kale, and ...