Rhonda Patrick· PhD
And so typically in our society, as you know, most of us are deficient in zinc. There are actually about a billion people on Earth is the estimate for zinc deficiency. It's a very common problem because if you have poor gastric acidity, which is common as we age, if you're taking PPIs for GERD, if you're taking something for reflux, you won't absorb the zinc very well, if you have copper piping which most of us do, the copper will often compete with the zinc.