"Momofmine--many people have low-level zinc issues, it really is hard to get a good amount just via diet and we have lots of high-copper foods (liver, nuts, legumes, chocolate are the most common in our diets) and most people who have a poor balance just have it via diet, maybe their hormonal BCP when they were younger added to the poor balance (it depletes zinc, I didn't know that when I took it)," . . . . . . .