Farming practices, including pesticide use and watering methods, impact deuterium content in foods, leading to variations of up to 20 ppm between different growing locations for the same food.

“there's no such thing as being 100% correct because the farming practices where you've done it changes everything so we can't say broccoli yeah location we can't say broccoli is better because there's some broccoli that's great some broccoli that's not what makes it less good it's their farming practice depending on if they use if if what kind of pesticides are used if they watered it if they watered it with rain water or mountain water just where it's grown so we can see as much as a 20 ppm difference between for instance red peppers that are grown and in hungry and red peppers that are grown in and in the crater”