Chromium - RDA's, deficiencies, benefits, foods rich in chromium, risks, Basics About ChromiumUnlike Sodium or Calcium, Chromium is a mineral that humans require in trace amounts. Chromium cannot be synthesized by the human body and must be provided by the diet. Chromium works directly on the cell membrane. In 1957, researchers identified chromium as the active component of the "glucose tolerance factor (GTF).
Chromium forms a compound in the body that seems to enhance the effects of insulin and may help lower glucose levels. It is also needed for the breakdown of proteins and fats. Lack of chromium may lead to nerve problems and may decrease the body's ability to use sugar better. However, chromium also has some risks and it's supplemental use is not endorsed by all physicians and researchers.
Benefits of chromium / Uses of chromium- Chromium is essential for amino acid transport, normal glucose metabolism, insulin metabolism, fatty acid metabolism and muscle growth. It is known to help in the control and production of insulin; hence diabetics are advised to take chromium supplements.
- It is an activator for several enzymes which are necessary for many chemical reactions in the body.
- Chromium may help in weight loss by suppressing hunger pangs.
- Recent studies have found that chromium helps to raise HDL (good) cholesterol in the body, thus preventing the development of arteriosclerosis.
- It increases general resistance to infection and stimulates the synthesis of proteins in the body.
Chromium Deficiency Symptoms -• Anxiety, attention deficit disorder, depression or bipolar disease
• Aortic cholesterol plaque and elevated blood cholesterol and triglycerides
• Decreased sperm count or infertility
• Glucose intolerance (particularly in people with diabetes)
• Hyperactivity and hyper-irritability
• Fatigue
• Negative nitrogen balance due to inadequate metabolism of amino acids
• Pre-diabetes and diabetes
• Impaired growth and learning disabilities
Chromium dosages / Recommended Daily Intake - Chromium is stored in the blood and hair. There are no official RDA's for chromium, but the Food and Nutrition Board at the Institute of Medicine recommends the following daily dietary intake for chromium:
Infants 0-6 months 0.2 mcg
7 - 12 months 5.5 mcg
Children 1 - 3 years 11 mcg
4 - 8 years 15 mcg
9 - 13 years (boys) 25 mcg
(girls) 21 mcg
Adolescents and AdultsMales age 14 -50years 35 mcg
Males age 51 and over 30 mcg
Females age 14 - 18 24 mcg
Females age 19 - 50 25 mcg
Females age 51 and older 20 mcg
Chromium food sources - Grains - Brewer's yeast, wheat germ, whole grains
Vegetables - mushrooms, green peppers, spinach, broccoli, potatoes, and green beans
Fruits - apples and bananas
Proteins - Beef and poultry
Milk and dairy productsOthers - Black pepper, butter and molasses are good sources
Side effects of chromium - Chromium seems to have few side effects, though it may occasionally cause the occasional irregular heartbeat, sleep disturbances, or allergic reactions. Those with liver or kidney disease may have an increased risk for liver or kidney damage, and should not take chromium without talking to their doctor first.
Chromium interactions - Since chromium may impact blood sugar levels, it is critical that diabetics or prediabetics on insulin, use chromium under the watchful eye of a medical doctor. Chromium may also occasionally interact with medicines like antacids, acid reflux drugs, corticosteroids, beta-blockers, insulin, and certain painkillers by preventing proper absorbtion of the mineral.
Chromium Risks - Pregnant or nursing women should not take chromium supplements.
By. Janki Patel,
Dietitian, NutritionVista.com
Links for references:1 dietary-supplements.info.nih.gov/factsheets/chromium
2 www.nlm.nih.gov/medlineplus/ency/article
3 CL Broadhurst, P Domenico - Diabetes Technology 2006 - liebertonline.com?Page 1. DIABETES TECHNOLOGY & THERAPEUTICS Volume 8, Number 6, 2006 © Mary Ann Liebert, Inc. Review Clinical Studies on Chromium Picolinate Supplementation in Diabetes Mellitus-A Review C. LEIGH BROADHURST, and PHILIP DOMENICO
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