Please consider supporting my work by making a purchase using these links at one of my affiliates: https://chrismasterjohnphd.com/foursigmatic, https://chrismasterjohnphd.com/paleovalley, https://chrismasterjohnphd.com/seekinghealth, https://chrismasterjohnphd.com/ancestralsupplements, https://chrismasterjohnphd.com/magicspoon, https://chrismasterjohnphd.com/lmnt  Plenty more at https://chrismasterjohnphd.com/support! Question: How long does it take environment to change gene expression, epigenetics, and genetics? Well, generally speaking, environment mediates, I mean, it depends what you mean by environment mediating, right? So environment mediates changes in gene expression through epigenetics, but gene expression is not SNPs. SNPs are produced through mutations in the heritable genome, and then by environment changing, do you mean the production of the mutation that is the SNP for the first time? Or do you mean the change in the proportion of the population? If you would like to be part of the next live Ask Me Anything About Nutrition, sign up for the CMJ Masterpass, which includes access to these live Zoom sessions, premium features on all my content, and hundreds of dollars of exclusive discounts. You can sign up with a 10% lifetime discount here: https://chrismasterjohnphd.com/q&a DISCLAIMER: I have a PhD in Nutritional Sciences and my expertise is in performing and evaluating nutritional research. I am not a medical doctor and nothing herein is medical advice.