Nutrition Q & A
Shari Lieberman, PhD, CNS
DIABETIC NEUROPATHY
I suffer from diabetic neuropathy. I heard there are special supplements that can help. Please let me know what they are
and how much to take.
GH, NC.
Vitamin B12 has been shown to improve diabetic neuropathy at doses of 500-1000 micrograms daily. Some people also do well
with weekly or bi-weekly injections of B12, and on the days they do not receive the B12 injections, they take the oral
supplements. There is also excellent research on alpha-lipoic acid being extremely therapeutic for diabetic neuropathy.
The therapeutic dose is 300-600 milligrams daily. Both of these supplements are extremely safe and effective and can be
taken with any other supplements you may be taking.
LUTEIN FOR MACULAR DEGENERATION
I read about lutein and macular degeneration. Is it really effective?
DK, NY.
Yes, it is very effective. In fact, in one study, patients were given large amount of spinach to eat each day, and they had
dramatic improvement in their macular degeneration. Spinach is a very rich source of lutein. The recommended dose is
generally 15 mgs. of lutein daily. Lutein can often be found as a supplement, combined with other nutrients that support eye
health, such as vitamin E and zinc.
CERNITIN: GOOD FOR PROSTATE PROBLEMS?
I recently read about a new product called Cernitin for prostate problems. How much should I take each day? Is there
research on it?
HP, DC
There is excellent research to support the use of Cernitin for benign prostatic hyperplasia (BPH). It is a completely
natural product made of flower pollen. It is anti-inflammatory and blocks the production of dihydrotestosterone which is a
culprit in prostate disease. Most studies used two or three 63 milligram tablets taken twice daily. It appears to improve
all of the symptoms of BPH, including the size of the prostate gland, maximum urine flow rate and urethral pressure. It can
be taken alone or along with Saw palmetto as well as other herbs that are therapeutic for BPH including Pygeum africanum
and stinging nettles.
SPRAY VITAMINS BETTER THAN TABLETS?
I’ve heard a lot about spray vitamins lately. They say they work better than tablets or capsules because they are better
absorbed. Is this true?
FD, PA.
The issue isn’t safety. The issue is the "better absorption" claim. While some of the nutrients such as B12 are absorbed
sublingually, the amount you get is substantially less than what you would get from a tablet, capsule or even the B12 dots
which provide 500-1000 micrograms each. Unfortunately, there appears to be no scientific studies to back up their claim that
it is actually absorbed "better" than a capsule or tablet. Also, the dose of vitamins you get in each spray is generally
less than the Recommended Daily Intake (RDI,) which I compare to the minimum wage - barely enough to get by on. You would
need to consume the whole canister to even reach the RDI values of most of the nutrients provided in the spray. Also,
studies have shown the minimum dose of vitamin E needed to prevent low-density lipoprotein cholesterol from oxidizing and
clogging your arteries is 400 international units (IU). Many of these companies are misleading the consumer into believing
that a spray of perhaps three international units would yield the same results because the absorption is greater. This is
illogical.
Shari Lieberman has a Ph.D in clinical Nutrition and Exercise Physiology.
Source: New Life - July/August, 2001