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Vitamins from A to Z

By Shmuel Shields, Ph.D., N.Y.S. Certified Nutritionist  

Recently, the fitness director at the Central Queens Y asked me to give a lecture entitled "Vitamins from A to Z: Which vitamins are right for me?"  In light of extensive research done in the process of developing VitaShield, my own multivitamin-mineral formula, I would like to share with you some important facts on this topic.

First and foremost, all vitamins are essential since the body requires a full range of vitamins every day.  Vitamins act as catalysts that encourage critical chemical reactions to take place; adequate intake is necessary to sustain health and life.  Minerals play a crucial role as well.

In an ideal world, we would get all the vitamins we need from the foods we eat.  In addition to vitamins and minerals, foods contain enzymes and other nutrients perfectly balanced for best absorption.  Today, however, most of us don't eat balanced meals; 90% of our foods are processed, compared to only 10% at the turn of the 20th century.  Our soil has been depleted and is restored only with the barest amount of synthetic chemicals.  Foods lose their nutritional value soon after they're harvested.  For example, a day after a head of spinach is pulled from the ground, it may lose about 50% of its Vitamin C value.  Further nutritional losses occur when foods are cooked or exposed to light and oxygen.

In addition, certain vitamins are not readily found in most foods.  For example, Vitamin D, known as the sunshine vitamin, is only found in significant amounts in oily fish.  Deficiencies are fairly common in Americans living in the North, who consume little fish and - for about five months of the year - have very limited sun exposure.  Recent research has found that low Vitamin D levels can weaken the bones, cause joint pain, restrict the absorption of calcium, impair muscle tone and balance, and increase the risks of diabetes, heart disease, cancer, multiple sclerosis, and mental illness.

To maximize your intake of vitamins from A to Z, choose foods wisely.  Include colorful fruits and vegetables, whole grains, lean protein, and fish.  Add a balanced multivitamin-mineral supplement to prevent deficiencies and boost your vitamin D intake.  Keep in mind that vitamins are not created equal and that the vitamin industry is unregulated.  It would be best to get assistance from a health care professional who can guide you to a properly balanced supplement produced by a reliable manufacturer.

Finally, a certain percentage of older adults have low Vitamin B-12 levels, which may affect cognitive functioning and memory.  It becomes more difficult to absorb Vitamin B-12 from foods as we age, whereas Vitamin B-12 found in a supplement is in a more easily absorbable form.  It is advisable to have certain vitamin and mineral levels checked in order to avoid deficiencies.  More common deficiencies include Vitamin B-12, Vitamin C, Vitamin D, Iron, Magnesium, and Zinc.


For a consultation with Dr. Shmuel (Rick) Shields, N.Y.S. Certified Nutritionist, call (718) 544-4036.  Most insurance plans are accepted.  House calls, phone and e-mail consultations, and guest speaking can be arranged.  For information about VitaShield, a high quality multivitamin and mineral supplement with a well absorbed form of vitamin D, contact Dr. Shields at (718) 544-4036 or e-mail him at

To learn more about the latest developments in nutrition and for further product information, visit the progressive, new website -

Please feel free to forward this article to others for educational purposes.

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