Pritesh:

Pritesh:
Showing posts with label Nutrition. Show all posts
Showing posts with label Nutrition. Show all posts

Thursday, April 17, 2008

Vitamin E linked to lung cancer


Vitamin E
High vitamin E doses were found to increase risk

Taking high doses of vitamin E supplements can increase the risk of lung cancer, research suggests.
The US study of 77,000 people found taking 400 milligrams per day long-term increased cancer risk by 28% - with smokers at particular risk.

It follows warnings about similar risks of excessive beta-carotene use.

Writing in the American Journal of Respiratory and Critical Care Medicine, an expert said people should get their vitamins from fruit and veg.


The jury's still very much out on whether vitamin and mineral supplements can affect cancer risk
Henry Scowcroft, Cancer Research UK

Dr Tim Byers, from the University of Colorado, said a healthy, balanced diet meant people took in a whole range of beneficial nutrients and minerals, which might help to reduce cancer risk.

The researchers followed people aged between 50 and 76 for four years and looked at their average daily use of vitamin C and folic acid, and vitamin E supplements.

Over the course of the study, 521 people developed lung cancer.

Smoking, family history and age all had unsurprisingly strong links to cancer risk.

And while neither vitamin C or folic acid use had any effect on lung cancer risk, vitamin E use did.

The researchers extrapolated their findings, and concluded that over a decade, there was an additional 7% increase in risk for every 100 milligrams taken per day.

The vitamin E trend was most prominent among smokers, but was not confined to them.

Vitamin E is known to be an antioxidant - protecting cells from molecules called free radicals.

But the US researchers speculate that, in high doses, it may also act as a pro-oxidant - causing oxidation and therefore damage to cells.

'Toxic effects'
Dr Christopher Slatore of the University of Washington in Seattle, who led the study, said: "In contrast to the often assumed benefits or at least lack of harm, supplemental vitamin E was associated with a small increased risk of lung cancer.

"Future studies may focus on other components of fruits and vegetables that may explain the decreased risk of cancer that has been associated with fruit and vegetables.

"Meanwhile, our results should prompt clinicians to counsel patients that these supplements are unlikely to reduce the risk of lung cancer and may be detrimental."

But Henry Scowcroft, senior science information officer at Cancer Research UK, said: "The jury's still very much out on whether vitamin and mineral supplements can affect cancer risk.

"Some studies suggest a benefit, but many others show no effect and some, like this one, suggest they may even increase risk."

He added: "Research repeatedly shows that a healthy, balanced diet can reduce your risk of some cancers while giving you all the vitamins you need.

"Quitting smoking remains the most effective way to avoid many cancers. There's no diet, or vitamin supplement, that could ever counter the toxic effects of cigarette smoke."

In 2002 a Finnish study of 29,000 male smokers found taking beta-carotene - which is converted into vitamin A in the body - was linked to an 18% increased risk of developing lung cancer

Wednesday, April 16, 2008

Vitamins 'may shorten your life'

Vitamins
Could they be doing more harm than good?

Research has suggested certain vitamin supplements do not extend life and could even lead to a premature death.

A review of 67 studies found "no convincing evidence" that antioxidant supplements cut the risk of dying.

Scientists at Copenhagen University said vitamins A and E could interfere with the body's natural defences.

"Even more, beta-carotene, vitamin A, and vitamin E seem to increase mortality," according to the review by the respected Cochrane Collaboration.

The research involved selecting various studies from 817 on beta-carotene, vitamin A, vitamin C, vitamin E, and selenium which the team felt were the most likely to fairly reflect the impact of the supplements on reducing mortality.

It has been thought that these supplements may be able to prevent damage to the body's tissues called "oxidative stress" by eliminating the molecules called "free radicals" which are said to cause it.

This damage has been implicated in several major diseases including cancer and heart disease.

'Just eat well'

The trials involved 233,000 people who were either sick or were healthy and taking supplements for disease prevention.

VITAL VITAMIN FACTS
Vitamin A: Found in: Oily fish, eggs and liver; Good for: Thought to boost immune system, and help skin, sight and sperm formation
Vitamin C: Found in: Many fruit and vegetables; Good for: Helps heal wounds and assists the body in absorbing iron, may boost the immune system
Vitamin E: Found in: Vegetable oils, seeds and nuts; Good for: May help boost circulation and keep elderly people active
Beta-carotene: Found in: Vegetables that are reddish-orange in colour; Good for: May boost vision and keep the mind sharp
Selenium: Found in: Butter, nuts, liver and fish; Good for: May boost the immune system
How many take vitamins? Between 10-20% of people in the West
How much is the global market worth? About $2.5bn (£1.3bn)

After various factors were taken into account and a further 20 studies excluded, the researchers linked vitamin A supplements to a 16% increased risk of dying, beta-carotene to a 7% increased risk and vitamin E to a 4% increased risk.

Vitamin C did not appear to have any effect one way or the other, and the team said more work was needed into this supplement - as well as into selenium.

In conclusion, "we found no evidence to support antioxidant supplements for primary or secondary prevention," they said.

It was unclear exactly why the supplements could have this effect, but the team speculated that they could interfere with how the body works: beta-carotene, for instance, is thought to change the way a body uses fats.

The Department of Health said people should try to get the vitamins they need from their diet, and avoid taking large doses of supplements - a market which is worth over £330m in the UK.

"There is a need to exercise caution in the use of high doses of purified supplements of vitamins, including antioxidant vitamins, and minerals," a spokesperson said.

"Their impact on long-term health may not have been fully established and they cannot be assumed to be without risk."

A 'stitch-up'

But the Health Supplements Information Service, which is funded by the association which represents those who sell supplements, said many people were simply not able to get everything they needed from their diet.

Dr Rosemary Leonard's advice on vitamins

"For the millions who are not able to do that, vitamins can be a useful supplement and they should not stop taking them," said spokeswoman Pamela Mason.

Another nutritionist who has formulated supplements described the review as a "stitch-up", arguing it only looked at studies which examined the effect they had on reducing mortality, rather than other advantages.

"Antioxidants are not meant to be magic bullets and should not be expected to undo a lifetime of unhealthy habits," said Patrick Holford.

"But when used properly, in combination with eating a healthy diet full of fruit and vegetables, getting plenty of exercise and not smoking, antioxidant supplements can play an important role in maintaining and promoting overall health."

Vitamin supplements help and are not a substitute -Joel Kosminsky, London

Sunday, April 13, 2008

Dangerous (Do not drink Coka-Cola and eat MENTOS together)


In Brazil, last week a little boy died when eating
Mentos and drinking Coca-Cola.

A similar case happened, in Brazil, a year before.
In order to see any reactions of these 2 products
which caused the death of the 2 Boys, a group
of people decided to do an experiment.

Now see what happens when adding Mentos to
Coca Cola!!! The pictures show the results.





So be careful with your Menthos and your Coke!!!


- BP SUJEEWON

Saturday, April 12, 2008

Why You Should Consider Adopting a Vegetarian Diet

Considering to Adopt a Vegetarian Diet

Cruelty to Animals

More than 27 billion animals are killed for food every year in the U.S. alone. Animals in factory farms have no legal protection from cruelty that would be illegal if it were inflicted on dogs or cats, including neglect, mutilations, genetic manipulation, drug regimens that cause chronic pain and crippling, transport through all weather extremes, and gruesome and violent slaughter. Read more.

Amazing Animals

Farmed animals are no less intelligent or capable of feeling pain than are the dogs and cats we cherish as our companions. They are inquisitive, interesting individuals who value their lives, solve problems, experience fear and pain, and are capable of using tools. According to animal-behavior scientists, chickens begin learning from their mothers while they are still in their shells, pigs can play video games better than some primates can, and fish form social bonds and can remember things that they have learned for the human equivalent of 40 years. Read more.

Your Health

Vegetarian foods provide us with all the nutrients that we need, minus the saturated fat, cholesterol, and contaminants that are found in meat, eggs, and dairy products. Plant-based diets protect us against heart disease, diabetes, obesity, strokes, and several types of cancer. Vegetarians also have stronger immune systems and, on average, live 10 years longer than meat-eaters do. Read more.

The Environment

America’s meat addiction is poisoning and depleting our potable water, arable land, and clean air. More than half the water used in the United States goes to animal agriculture, and since farmed animals produce 130 times more excrement than the human population does, the run-off from their waste greatly pollutes our waterways. Read more.

World Hunger

Raising animals for food is extremely inefficient—for every pound of food that they eat, only a fraction of the calories are returned in the form of edible flesh. If we stopped intensively breeding farmed animals and grew crops to feed humans instead, we would easily be able to feed every human on the planet with healthy and affordable vegetarian foods. Read more.

Worker Rights

Human Rights Watch has declared that slaughterhouse workers have “the most dangerous factory job in America.” The industry has refused to do what’s necessary to create safe working conditions for its employees, such as slowing down slaughter lines and supplying workers with appropriate safety gear, because these changes could cut into companies’ bottom lines. Read more.

Factory Farms: Poisoning Communities

Factory farms pollute the air and water for many miles in every direction, often spreading contamination and illness to the people who live and work nearby. Chronic sickness, brain damage, poisoned waterways, elevated cancer rates, and even death plague these communities, while the government does nothing to protect citizens or regulate the industry. Read more.

Government Negligence

Between 2000 and 2005, agribusinesses funneled more than $140 million to politicians, who more than earned their money by helping to ensure that laws that might protect consumers, animals, and the environment did not pass. The unfortunate truth is that the federal government does very little to protect human health, animal welfare, and our environment from the factory-farming industry’s negligence and excess. Read more.

Corporate Campaigns

Since October 1999, when we launched our "McCruelty" campaign against Fortune 500 company and fast-food-giant McDonald's, PETA has waged a series of successful campaigns urging the restaurant and grocery industries to improve conditions for the animals killed for their menus and shelves. Read more.

Benefits of Eating Fruits and Vegetables - Vitamins

Vitamins

Eating a wide variety of fruit and vegetables means you're more likely to get all the vitamins and minerals you need. But what are vitamins - and why are they so important to your good health?

  • Vitamins are organic substances - this means
they're found in plants and animals.

  • Most vitamins can't be made by your body,
so they must be sourced from your diet.Vitamin D
and the B vitamin niacin are exceptions to this.

  • Nutritionists have divided vitamins into two groups:
fat-soluble and water-soluble.

  • The fat-soluble vitamins - A, D, E and K -
are transported through your body by fat.
They can also be stored in your fat and
liver cells for a limited period of time.


  • The water-soluble vitamins - B and C -
are absorbed by and transported through your body in water.
They need to be eaten every day, as you can't store them for
any length of time.

Fat-soluble vitamins

Vitamin Why important? Where found? Daily Recommendation
Vitamin AIt looks after your eyes, the lining of your nose, throat and lungs, and your skin cells.Carrots, sweet potatoes, pumpkins, red chillies, tomatoes, 'orange' fruits, such as apricots and mango, and dark green leafy vegetables.600µg for females, 700µg for males.
Vitamin DIt helps your body to absorb calcium, needed to ensure strong bones and teeth.The most important source is the sun, but it's also found in tiny amounts in dairy products, cod liver oil and oily fish.No recommendations as sunlight is the main source.
Vitamin E It fights free radicals - unbalanced molecules that can cause damage to your cells. It also contributes to the healthy condition of your skin.Vegetables, poultry, fish, fortified breakfast cereals, vegetable oils, nuts and seeds.Up to 4mg for adult males and up to 3mg for adult females is considered a safe intake.
Vitamin KIt helps your body to make a number of proteins, one of which helps your blood to clot.Dark green leafy vegetables such as Brussels sprouts, broccoli, cabbage, spinach and asparagus. It's also found in soya oil and margarine.1µg for every kg of body weight is considered a safe intake for both men and women.

Water-soluble vitamins

Vitamin Why important? Where found? Daily recommendation
B-complex VitaminsThey help you to metabolise your food and help your blood cells to form and flow.Green vegetables, wholegrains, meat, such as liver, kidneys, pork, beef and lamb, vegetable extracts, nuts and fortified breakfast cereals.Eight vitamins make up the B-complex family:
B1 (Thiamin) - Adult male, 0.9mg. Adult female, 0.8mg.
B2 (Riboflavin - Adult male, 1.3mg. Adult female, 1.1mg.
B3 (Niacin) - Adult male, 17mg. Adult female, 13mg.
B5 (Pantothenic Acid) - 3 to 7mg is considered a safe intake for both sexes.
B6 (Pyridoxine) - Adult male, 1.4mg. Adult female, 1.2mg.
B9 (Folate) - 200 mcg for both adult males and females.
B12 (Cobalamin)
Biotin - 10-20 µg is considered a safe intake for both sexes.
- 1.5 µg for both adult males and females.
Vitamin CIt helps your body to produce collagen (important for skin and bone structure) and to absorb iron.A wide variety of vegetables and fruit, including spinach, broccoli, tomatoes, strawberries, citrus fruit and potatoes.40mg for both adult male and female.