Quercetin Increases Endurance without Regular Exercise Training

A study by researchers at the University of South Carolina’s Arnold School of Public Health shows that quercetin, the powerful antioxidant/anti-inflammatory compound found in fruits and vegetables significantly boosts endurance capacity and maximal oxygen capacity (VO2max) in healthy, active but untrained men and women.

The fatigue-fighting and health properties of quercetin – found in the skins of red apples, red onions, berries and grapes – have implications not only for athletes and soldiers whose energy and performance are tested to the extreme, but also for average adults who battle fatigue and stress daily.

View details of this quercetin increases endurance study.

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Antibiotics Take Toll on Beneficial Microbes in Gut

In studies in mice, University of Michigan scientists have shown that two different types of antibiotics can cause moderate to wide-ranging changes in the ranks of probiotic bacteria in the gut. In the case of one of the antibiotics, the armada of “good bacteria” did not recover its former diversity even many weeks after a course of antibiotics was over.

"The study results suggest that unless medical research discovers how to protect or revitalize the gut microbial community, “we may be doing long-term damage to our close friends.”

View details on this antibiotic probiotic gut microbe study.

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Green Tea Extract Shows Promise in Leukemia Trials

Mayo Clinic researchers are reporting positive results in early leukemia clinical trials using the chemical epigallocatechin gallate (EGCG), an active ingredient in green tea. The trial determined that patients with chronic lymphocytic leukemia (CLL) can tolerate the chemical fairly well when high doses are administered in capsule form and that lymphocyte count was reduced in one-third of participants.

The majority of individuals who entered the study with enlarged lymph nodes saw a 50 percent or greater decline in their lymph node size.

View details on this green tea leukemia study.

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Vitamin D3 May Halt Lung Function Decline in Asthma and COPD

Vitamin D may slow the progressive decline in the ability to breathe that can occur in people with asthma as a result of human airway smooth muscle (HASM) proliferation, according to researchers at the University of Pennsylvania.

The group found that calcitriol, a form of vitamin D, naturally synthesized within the body, reduced growth-factor-induced HASM proliferation in cells isolated from both persons with asthma and from persons without the disease. The proliferation is a part of process called airway remodeling, which occurs in many people with asthma, and leads to reduced lung function over time.

Read more about vitamin D halts asthma and COPD

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DHEA Hormone Replacement Increases Bone Density in Older Women

Taking a DHEA supplement combined with vitamin D and calcium can significantly improve spinal bone density in older women, according to a new study from a Saint Louis University scientist and his colleagues at Washington University.

The results of the study are promising for older women. According to Weiss, patients who achieve similar increases of 2 to 4 percent in spinal bone density with the help of medication experience a 30 to 50 percent reduction in risk of spine fractures.

Read details on this dhea bone mineral density study.

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Folic Acid May Help Treat Allergies, Asthma

Folic acid, or vitamin B9, essential for red blood cell health and long known to reduce the risk of spinal birth defects, may also suppress allergic reactions and lessen the severity of allergy and asthma symptoms, according to new research from the Johns Hopkins Children’s Center.

“Our findings are a clear indication that folic acid may indeed help regulate immune response to allergens, and may reduce allergy and asthma symptoms,” says lead investigator Elizabeth Matsui, M.D.

Read details on this folic acid allergy and asthma study.

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Oral Vitamin D May Help Prevent Atopic Dermititis

A study suggests that use of oral Vitamin D supplements bolsters production of a protective chemical normally found in the skin, and may help prevent skin infections that are a common result of atopic dermatitis, the most common form of eczema.

Atopic dermatitis is characterized by areas of severe itching, redness and scaling. Over time, chronic changes can occur due to constant scratching and rubbing. The condition puts patients at increased risk for skin infections by Staph aureus and the herpes and small pox viruses.

Study participants were all given 4000 IUs of oral Vitamin D3 (cholecalciferol) per day for 21 days. Skin lesions were biopsied before and after the 21-day period. The researchers found that oral vitamin D use by the patients appeared to correct the skin’s defect in cathelicidin.

Read details on this vitamin D-3 atopic dermititis study.

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