When my mom's side of the family moved here from Ukraine in the early 1900's (some came even before that in the later 1800's) My grandparent's "spirituality" was Orthodox. Most people from Ukraine (and those still living there) are either Orthodox or Catholic. And what kind of health practices are you interested in knowing? Home remedies? I can tell you we use garlic for everything and some people will say garlic and vodka cure everything and anything

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Another great place you could check out is Westman Immigrant Services. Good Luck on your project!