I'm Jewish and pretty much everyone in my family has curly or wavy hair. I find there's a definite geographic divide in terms of who wears their hair curly, and who keeps it straight. My mom, who moved to Toronto, and those of her siblings and cousins who also moved away from Montreal wear their hair naturally curly. Those who stayed in Jewish Montreal have teased, sprayed helmet hair to this day. It's kind of a time warp hairstyle and I find that it's ubiquitous in Cote St-Luc, the Jewish Montreal suburb my mom comes from. The younger Cote St-Luc generation seems to be changing that, though. Thank god.