Antioxidant | Page 6 of 7 | Health Newstrack

Antioxidants for free radicals may not stop aging

Forget the antioxidants? McGill researchers cast doubt on role of free radicals in aging. Some organisms live longer when their ability to rid themselves of free radicals is partially disabled. – For more than 40 years, the prevailing explanation of why we get old has been tied to what is called oxidative stress. This theory postulates that when molecules like free radicals, oxygen ions and peroxides build up in cells, they overwhelm the cells’ ability to repair the damage they cause, and the cells age.

Enjoy healthy passion of chocolate this Valentine’s Day

Make hearts happy this Valentine’s Day — Enjoy the healthy passion of chocolate – Nothing says Valentine’s Day like a big chocolate heart. While overindulging leads to calorie concerns, the right amounts of the right kinds of chocolate can actually make your valentine feel and even look better.

Multivitamins offer no benefit in postmenopausal women

Long-term multivitamin use has no impact on the risk of common cancers, cardiovascular disease or overall mortality in postmenopausal women. – The largest study ever conducted on postmenopausal women shows that multivitamins may offer no benefit in reducing the risk of common cancers, cardiovascular disease or overall mortality.

Vitamins C and E and beta carotene may not reduce cancer risk

Vitamins C and E and beta carotene again fail to reduce cancer risk in randomized controlled trial – Women who took beta carotene or vitamin C or E or a combination of the supplements had a similar risk of cancer as women who did not take the supplements, according to data from a randomized controlled trial in the December 30 online issue of the Journal of the National Cancer Institute.

Grape seed extract may cure leukemia

Grape seed extract kills laboratory leukemia cells, proving value of natural compounds. – An extract from grape seeds forces laboratory leukemia cells to commit cell suicide, according to researchers from the University of Kentucky. They found that within 24 hours, 76 percent of leukemia cells had died after being exposed to the extract.

Ginkgo biloba does not reduce dementia, Alzheimer’s disease risk

Ginkgo biloba does not reduce dementia or Alzheimer’s disease risk according to Pitt-led study in JAMA. – The medicinal herb Ginkgo biloba does not reduce the risk of dementia or Alzheimer’s disease development in either the healthy elderly or those with mild cognitive impairment, according to a large multicenter trial led by researchers at the University of Pittsburgh School of Medicine.

Vitamin C lowers heart disease biomarker

Vitamin C lowers levels of heart disease biomarker, finds study, adds to debate of health benefits – A new study led by researchers at the University of California, Berkeley, adds to the evidence that vitamin C supplements can lower concentrations of C-reactive protein (CRP), a central biomarker of inflammation that has been shown to be a powerful predictor of heart disease and diabetes.

Vitamin B and Folic acid do not appear to affect cancer risk

Combined folic acid, vitamin B6, and vitamin B12 treatment had no significant effect on overall risk of total invasive cancer or breast cancer among women during the folic acid fortification era. – A daily supplementation combination that included folic acid and vitamin B6 and B12 had no significant effect on the overall risk of cancer, including breast cancer, among women at high risk of cardiovascular disease, according to a study in the November 5 issue of JAMA.

Purple, high anthocyanin tomatoes offer protection against certain cancers

High anthocyanins content tomatoes, produced by European researchers, may be able to extend lifespan in cancer-prone mice; the finding by the FLORA European Project published in the journal Nature Biotechnology. – Scientists have expressed genes from snapdragon in tomatoes to grow purple tomatoes high in health-protecting anthocyanins.

Vitamin C supplements reduce benefits of anti cancer drugs

Vitamin C supplements may reduce benefit from wide range of anti-cancer drugs – In pre-clinical studies, vitamin C appears to substantially reduce the effectiveness of anticancer drugs, say researchers at Memorial Sloan-Kettering Cancer Center.