According to a google search, "the only natural food sources are shellfish shells from shrimp, lobster and crabs". So I wonder if you can see a significant effect in people who eat a lot of shrimp.
Interesting, I'm vegan and the glucosamine I've ordered has claimed to be sourced from a fungus. Perhaps the fungus isn't edible (hence, it's not a natural food source)
Seriously. Get some good shrimp, some garlic, and go to town on some crusty bread. It's one of the recipes I'd still eat even if it took time off my life, it's just so damn good.
My favorite sushi restaurant in San Mateo, CA (sushi sams) would serve a single fried shrimp appetizer with the head still on. It's a crispy tasty delight!
