The "agricultural revolution" 10k years ago actually shrank people and riddled them with disease. There's a hard line in places that adopted grain agriculture in the archaeological record; all of the skeletons suddenly appear massively stunted with arthritis, bone deformities, and rotten teeth. Places that still eat a traditional diet of mostly meat, seafood & dairy are still amongst the tallest people in the world; the Maasai & Scandinavia for example.