6. Boron
To increase your boron intake to this level, eat over nine apples a day. This might be an unreasonable amount for most people, but don’t despair. Pair an apple with other foods rich in boron like a few tablespoons of peanut butter and a large handful of raisins, and not only will you get a delicious afternoon snack, but you will save your quota of boron at the same time.
