Galanthus nivalis can be helpful in the treatment of Alzheimer's disease, though it is not a cure. Snowdrops contain also an active lectin or agglutinin named GNA for "Galanthus nivalis agglutinin". Potatoes have been genetically modified with the GNA gene. In 1998 Árpád Pusztai said in an interview on a World in Action programme that his group had observed damage to the intestines and immune systems of rats fed the genetically modified potatoes. He also said "If I had the choice I would certainly not eat it", and that "I find it's very unfair to use our fellow citizens as guinea pigs".
Luzula nivalis considered L. nivalis to be conspecific with L. arctica, but some of them (Hultén 1968, Böcher et al. 1968) have used the name L. arctica, while the others (Porsild and Cody 1980...) [have used] the correct name L. nivalis.". Elven et al. (2003) also noted that "L. campestris" var. "nivalis" was widely considered to be conspecific with "L. arctica." The current botanical consensus seems to be that lectotypification solves the issue and that "L. arctica" and "L. nivalis" should be regarded as the same species, with the name "L. nivalis" being chosen as this (derived from "L. campestris" var. "nivalis")