That 10-20% goes even lower as we age (especially we seniors darn it - :-)) as we have a heck of a lot less stomach acid required to break down these pills and capsules.

Here's a very interesting thought that occurred to me a few years ago that may interest you as well.

After snooping around a little we also learned that four to five crop rotations were planted each year on a single plot of land, intense farming practices have depleted vital nutrients from soil. 99% of us are deficient in minerals...The alarming fact is that foods, fruits, vegetables, and grains now being raised on millions of acres of land no longer contain enough certain needed minerals and are starving us, no matter how much of them we eat.

These deficiencies are showing up in our bodies. You'll find some of common deficiencies at our site if interested. Remember to be certain to take your liquid vitamins daily and combine them if possible with other nutrients.