Hey, TinaT. No worries! I just have a history of guzzling fish oil, and I wouldn’t want more people to fall into that trap than already will!
I think the salivary amylase copy number thing and starch digestion are interesting. I would have loved to see 23andme or whoever offer this as part of their genome test. The other question that I’m looking forward to researchers looking into is pancreatic/intestinal amylase activity level. Some say pancreatic amylase is sufficient for starch digestion, independent of any salivary amylase, and that it is less variable among populations. I’m not so sure, so I’d love to see it studied for real. I don’t think salivary amylase copy number would have increased for no reason, and its connection with starch eating among populations seems potentially strong enough to be causal.