Vitamin B12 is needed for nourishing the nerves and is found to be helpful with MS, Bell's Palsy, and Parkinson disease. B12 also plays a huge role in protein conversion and is needed to prevent anemia. Some studies has even shown B12 to be one of the few items to have an impact on damaged nerves. With all the ways this amazing vitamin is needed and helps, we do not want to destroy it by using the microwave.
Foods B12 are found in listed below.
Sea Vegetables: Kelp, Dulse, and Nori.
More information at Journal of Agriculture and Food Chemistry.