|
|
A high intake of zinc interferes with magnesium...In a carefully controlled study, people taking a supplement containing 45 milligrams of zinc (for a total of 53 milligrams from supplements and diet) had decreased magnesium balance. The study, published in the May 2004 issue of the European Journal of Clinical Nutrition, looked at 25 women with an average age of 65 years The women lived in a metabolic ward for six months so everything they ate, drank and excreted was measured. Moderately high intake of zinc increased the loss of magnesium in both urine and feces. It also unfavorably altered two markers of bone formation in the women. People taking zinc supplements or using zinc lozenges to treat cold symptoms can get up to 150 milligrams of zinc. These amounts can interfere with copper metabolism and depress HDL-cholesterol and immune functions. Because they tend to eat more, physically active people consume zinc in amounts exceeding the recommended daily amount (12 milligrams for women and 15 milligrams for men). However, certain groups (endurance athletes, for example) often consume a lot of carbohydrate. This can displace other foods — such as red meat — that contain high levels of zinc. Unfortunately, it's difficult to establish whether you're getting enough zinc. Although measuring levels in the blood is one way to diagnose a severe zinc deficiency, it's not sensitive enough to establish a moderate zinc deficiency. Good sources of zinc include sirloin steak (4.4 milligrams per 3 ounces), lamb chop (4 milligrams per 3 ounces), and turkey (2.6 milligrams per 3 ounces). Six large oysters provide over 20 milligrams of zinc. If you don't eat these foods on a regular basis, then a vitamin and mineral supplement can reduce your risk of a zinc deficiency. Related Articles
Reference |
Who is Christian Finn? |
|
 |
Flabby out-of-shape company president used this unique method to drop 24 pounds and 4 inches from his waist in just 5 months. |
 |
Did this guy use steroids to gain 84 pounds? Take a look at his controversial "before and after" pictures and decide for yourself. |
 |
Natural bodybuilder thumbs nose at weight loss "experts" and finally reveals the simple science of fat loss no one else will tell you. |
 |
"Weird" video reveals how you can trim your stomach at least FIVE times faster than you could with regular ab exercises. |
|
The Facts About Fitness The Facts About Fitness Limited is registered in England and Wales No. 04538088 |
