News & tips on health, fitness and nutrition
Showing posts with label vitamins. Show all posts
Showing posts with label vitamins. Show all posts

Sunday, August 8, 2010

Consumer Reports: Multivitamin Ratings


Consumer Reports: All but one of the products we tested met their label claims for key essential vitamins and minerals, and none contained worrisome levels of contaminants such as arsenic or heavy metals. Most of the pills we tested also passed the U.S. Pharmacopeia's dissolution test, which involves immersing them in a simulated stomach-acid solution to determine whether they'll dissolve properly in your body. (The USP is an independent standards-setting authority for the drug and dietary supplement industries.)
What's more, they found that store brands did just as well in our tests as national brands, at a lower price. The biggest winner: Costco's Kirkland Signature, whose regular, "mature," and children's multis cost a nickel or less a day.

Sunday, April 18, 2010

Multivitamins may raise breast cancer risk

Women who take a daily multivitamin pill may face a higher risk of breast cancer, a new study has claimed.

In the 10-year study, which followed more than 35,000 women, boffins found that those who regularly took a multi-vitamin pill increased the risk of developing a tumour by 19 per cent, reports News.com.au.

The study, conducted by Sweden’s Karolinska Institute, has been published in the American Journal of Clinical Nutrition.

According to researchers, a ‘biologically plausible’ explanation for the effect could be that taking vitamin and mineral supplements significantly increases the density of breast tissue, a strong risk factor for breast cancer. Folic acid, often present in a potent form in multi-vitamins, may also accelerate tumour growth.

"Results from this prospective study suggest that the use of multivitamins may increase the risk of breast cancer," the lead author of the study, Susanna Larrson, said.

Monday, May 26, 2008

Vitamin survey : startling health benefits and reductions in the risk of disease

While fruit and vegetables are a prime source of the vitamins we need, it takes 66 oranges to supply our recommended daily requirement of vitamin C, a nutritionist says

Despite well-entrenched beliefs to the contrary, supplements really do have beneficial effects, writes Andrea Nagel

The more supplements you take the healthier you are, says a new study published in the Nutrition Journal conducted by Gladys Block at the University of California.

People who rely on supplements to augment their diets have long been thought to be “just making expensive urine”. But the study argues that taking supplements can drastically improve one’s health.

Patrick Holford, who was in South Africa last week to promote his latest book, Optimum Nutrition Made Easy, co-written with Susannah Lawson, agrees.

He believes that the findings of the survey are completely consistent with the emerging science helping to define what “optimum nutrition” really means.

He says: “On the basis of studying the science of nutrition for the last 30 years, I take five different supplements twice a day , as well as following as healthy a diet as possible.”

Holford consumes the following cocktail of supplements:

1. A high-strength multivitamin (that should provide 15mcg of vitamin D and other high minerals);

2. vitamin C, together with zinc and berry extracts, essential omega 3 and 6 fats;

3. phospholipids (phosphatidyl choline, serine, DMAE) and other brain-friendly nutrients including the amino acid pyroglutamate; and

4. extra antioxidants including glutathione, alpha-lipoic acid, co-enzyme Q10, selenium and resveratrol.

“I also occasionally take digestive enzymes, probiotics and glutamine powder if I have any digestive problems, extra chromium if my energy is low, niacin (B3) if I get a headache, extra vitamin A if I have an infection, and extra magnesium if I’m stressed” he says. “If I have an allergic reaction I take extra quercitin with MSM, glutamine, vitamin C and bromelain.”

The Nutrition Journal survey of October 2007 involved testing three groups of people: one that took no supplements, one that took a single multivitamin and one that took a combination of various vitamins according to the needs of their bodies.

Commenting on the survey, Holford says: “The multi-supplement takers who customised their selection were the most optimally healthy and had the optimum levels of nutrients in their blood even though the body excretes more than half of what it uses.”

The study was partly motivated by the concern that taking large amount of supplemental nutrients might lead to adverse effects from overdosing, but the results showed startling health benefits and disease risk reductions the more supplements were taken, with no apparent downside, except perhaps the cost.

Holford does insist that the correct diet is essential for maintaining not only good health but also abundant energy, ideal weight, great skin, no pain, a happy and motivated mood and a sharp mind and memory.

He also insists that an optimal diet can strengthen the immune system, balance hormones and produce a trouble-free digestive system.

“Our species has lost the sense of what we’re supposed to eat” he says.

“I eat like a gorilla and supplement because I can’t get enough nutrients and minerals from my diet.”

Holford says to maintain the recommended daily dose of vitamin C, we have to eat 66 supermarket oranges, a good reason to take a supplement.

A high level of vitamin C in the body helps protect your health, he says, but he is quick to admit that each body has its own distinct needs that depend on a whole host of factors — including the effects of our environment.

“That’s why saying that we all need 60mg of vitamin C each day (which is the UK government’s recommended intake for adults) is like saying we all need size 10 shoes.”

Holford’s proposed mission is to help the individual work out his or her specific needs to provide optimum nutrition.

“I want to help people to feel 100percent healthy, to help them keep fit and happy and prevent them from getting sick.”

He believes that most sicknesses are preventable if you have the right lifestyle and consume optimum nutrition.