The best thing to do to ward off pre-eclampsia is to eat MORE protein and a balanced diet rich in whole grains, fruits and veggies. Drink LOTS of water too. Eating meat 2 times a day is helpful to read the targeted 80 - 100 grams of protein per day. If you are really getting pre-eclampsia, you will need 150 - 200grams of protein per day until you get back to normal. See the Brewer pregnancy diet on the internet for guidance. Add a protein powder mixed with milk to boost your protein.
I know an acupuncturist in Frisco. Dr. Trevin Fugere at Fusion Chiropractic. I highly recommend him.