# Poison **Covers**:: **Source**:: [Poison](https://newsletter.eleanorkonik.com/poison) **Creator**:: [[newsletter.eleanorkonik.com]] # Highlights ##### ^244950793 ###### ^244950793q Lactose tolerance is relatively rare in adult humans ... [Scientists have done genetic studies](https://www.bbc.com/news/science-environment-49650806) ... even though we have evidence that Neolithic humans ate milk products (like [cheese](https://newsletter.eleanorkonik.com/cheese/)), the genetic mutation that lets people drink milk without getting stomach aches is new. Like Bronze Age new, and even then, only about 5-10% of Europeans were lactose tolerant. ... Neolithic humans ate milk products ... the genetic mutation ... is ... Bronze Age new ^244950793 ##### ^245074517 ###### ^245074517q [Scientists have done genetic studies](https://www.bbc.com/news/science-environment-49650806) ... even though we have evidence that Neolithic humans ate milk products (like [cheese](https://newsletter.eleanorkonik.com/cheese/)), the genetic mutation that lets people drink milk without getting stomach aches is new. Like Bronze Age new, and even then, only about 5-10% of Europeans were lactose tolerant. ^245074517 ##### ^244950931 ###### ^244950931q even though ... Bronze Age new ^244950931 ##### ^244950794 ###### ^244950794q Neolithic humans ate milk products ... the genetic mutation ^244950794 ##### ^244950795 ###### ^244950795q the genetic mutation ... is ^244950795 ##### ^244950796 ###### ^244950796q is ... Bronze Age new ^244950796 ##### ^244951324 Goto: https://newsletter.eleanorkonik.com/poison?__readwiseLocation=0%2F17%2F7%2F1%2F1%2F1%2F1%2F5%2F1%3A91%2C0%2F17%2F7%2F1%2F1%2F1%2F1%2F5%2F1%3A150#:~:text=less%20than%2030%25%20of%20adults%20in%20Kazakhstan%20are%20lactose%20tolerant. ###### ^244951324q less than 30% of adults in Kazakhstan are lactose tolerant. ^244951324 ##### ^244962793 Goto: https://newsletter.eleanorkonik.com/poison?__readwiseLocation=0%2F19%2F7%2F1%2F1%2F1%2F1%2F5%2F1%3A0%2C2%2F19%2F7%2F1%2F1%2F1%2F1%2F5%2F1%3A68#:~:text=Milk%20obviously%20wasn't%20the%20only%2Ca%20%22fragrant%20and%20sickening%20odor.%22 ###### ^244962793q Milk obviously wasn't the only substance used as a laxative in the pre-industrial world. Senna was a popular herbal remedy. It's [described as](https://www.civilwarmed.org/senna/) having a "urine yellow color" with a "fragrant and sickening odor." ^244962793