I understand that the author is going through a difficult time, but when medical advice is presented to the public, it needs to include all relevant information. Spina Bifida is most commonly diagnosed through routine sonograms, usually by the 16th-20th week of pregnancy. Thanks to the wonders of advanced science and technology that Hashem has blessed us with, it is now possible to begin treatment while the baby is in utero. This surgery can substantially reduce the severity of the condition and in quite a few cases allow the child to live a full and active life.
By not including this information, it is being inferred that the only way to diagnose this condition is through the blood test and that treatment can only begin once the baby is born (will less optimal results). Sonograms are part of routine pregnancy care and are not done only if the patient refuses it. If there’s any personal preferences for not having a sonogram done, then please issue a disclaimer with your message. If its truly awareness that you’re trying to raise, then a good portion of the letter should have been devoted to the sonogram and surgery in utero. Taking vitamins is not a guarantee that this condition will be avoided (I’m not discounting its benefits). If parents are told that their unborn is being diagnosed with this disease, wouldn’t you want them to be aware of all options, including the one that offers the best possible results?