If you are already eating a reasonable
amount of red meat, say 8 ounces a day,
and especially if already consuming a zinc
supplement or other supplement products
that contain zinc, as many MRP’s and bars
do, I doubt that getting more zinc from ZMA
is going to be of benefit.
Six ounces of beef contains more than 100%
the RDA of zinc in a highly bioavailabile form. Now, athletes may need more than the
RDA, but in the above situation you’d be
getting more than the RDA already.
Where I consider ZMA particularly worthwhile is in dieting situations where other zinc supplements are not being taken.