Change in the amount of iron – previous versions provided 18mg a day if you did 3 meals of Keto Chow. This is the recommended amount for pre-menopausal women but for post-menopausal women or men, that amount is borderline high. 40mg a day is the short-term upper tolerable limit but I didn’t want to be causing a slow build-up of iron (especially in myself =) if Keto Chow was used for all meals over months. The downside to this change is that many women will need to supplement their iron using something like this, this, or this in order to prevent anemia if they use Keto Chow exclusively for all their meals. An occasional meal with red meat will also work.