I’ve consistently been drinking about four bottles a day, and otherwise eating pretty healthy high-protein vegetarian stuff. But I was feeling weak and achy a lot of the time, so I went to see a doctor, and blood tests showed an iron deficiency and anemia.
That was a surprise - I’ve been vegetarian for a decade and never had this problem before, which makes me wonder whether the iron in Soylent might be particularly difficult to absorb. Is this a common experience? I’m finding the anemia pretty unpleasant, and even with iron supplements it’s apparently going to be at least a couple weeks before I fully recover.