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Entries in Selenium (2)

Thursday
Nov032011

Super Broccoli, now available courtesy of natural science and study. 

British scientists unveiled a new breed of the vegetable that experts say packs a big nutritional punch.

The new broccoli was specially grown to contain two to three times the normal amount of glucoraphanin, a nutrient believed to help ward off heart disease.

"Vegetables are a medicine cabinet already," said Richard Mithen, who led the team of scientists at the Institute for Food Research in Norwich, England, that developed the new broccoli. "When you eat this broccoli ... you get a reduction in cholesterol in your blood stream," he told Associated Press Television.

An AP reporter who tasted the new broccoli found it was the same as the regular broccoli. Scientists, however, said it should taste slightly sweeter because it contains less sulphur.

Glucoraphanin works by breaking fat down in the body, preventing it from clogging the arteries. It is only found in broccoli in significant amounts.

Super Broccoli: higher in special nutrients that fight heart disease and lower cholesterol levels is now becoming available in stores.To create the vegetable, sold as "super broccoli," Mithen and colleagues cross-bred a traditional British broccoli with a wild, bitter Sicilian variety that has no flowery head, and a big dose of glucoraphanin. After 14 years, the enhanced hybrid was produced, which has been granted a patent by European authorities. No genetic modification was used.

It's been on sale as Beneforte in select stores in California and Texas for the last year, and hit British shelves this month. Later this fall, the broccoli will be rolled out across the U.S.

The super vegetable is part of an increasing tendency among producers to inject extra nutrients into foods, ranging from calcium-enriched orange juice to fortified sugary cereals and milk with added omega 3 fatty acids. In Britain, the new broccoli is sold as part of a line of vegetables that includes mushrooms with extra vitamin D, and tomatoes and potatoes with added selenium.

Not enough data exists to know if anyone could overdose on glucoraphanin, but vitamin D and selenium in very high quantities can be toxic.

Mithen and colleagues are conducting human trials comparing the heart health of people eating the super broccoli to those who eat regular broccoli or no broccoli. They plan to submit the data to the European Food Safety Agency next year so they can claim in advertisements the broccoli has proven health benefits.

"There's a lot of circumstantial evidence that points to (glucoraphanin and related compounds) as the most important preventive agents for (heart attacks) and certain cancers, so it's a reasonable thing to do," said Lars Ove Dragsted, a professor in the department of human nutrition at the University of Copenhagen. He previously sat on panels at the International Agency for Research on Cancer examining the link between vegetables and cancer.

Dragsted said glucoraphanin is a mildly toxic compound used by plants to fight insects. In humans, glucoraphanin may stimulate our bodies' natural chemical defences, potentially making the body stronger at removing dangerous compounds.

Other experts said eating foods packed with extra nutrients would probably only have a minimal impact compared with other lifestyle choices, like not smoking and exercising.

"Eating this new broccoli is not going to counteract your bad habits," said Glenys Jones, a nutritionist at Britain's Medical Research Council. She doubted whether adding the nutrients in broccoli to more popular foods would work to improve people's overall health.

 

Tuesday
Oct252011

9 Foods That Can Elevate Your Mood and Fight Depression, Naturally. 

Instead of candy and calorie high, nutrient poor foods as comfort, turn to these alternatives for actual mood enhancement via their natural chemicals and amino acids. Below is a list of common snack foods that not only are nutritious but have excellent and important benefits to your mood and mindset. 

Popcorn

The mood booster: Tryptophan

When this amino acid is consumed with carbohydrates instead of protein, it's more effective in aiding the body's production of serotonin, a tranquility-inducing brain chemical. A study published in the journal Acta Psychiatrica Scandinavia found that foods containing tryptophan, like mustard greens, pumpkin seeds and bananas, offer mood-elevating effects. Tryptophan levels are often low in people suffering from depression, although researchers are unclear as to whether the relationship is a cause or a consequence of the condition. The next time you feel down, try 3 cups of air-popped popcorn for 100 calories instead of gnawing on a drumstick.

Walnuts

The mood booster: Alpha-linolenic acid

While EPA and DHA, two omega-3 fatty acids found in salmon, tuna, and fish oil supplements, have been touted to help depression sufferers beat the blues, a new study of 55,000 women published in the American Journal of Clinical Nutrition suggests that alpha-linolenic acid (ALA), an omega-3 fatty acid in plant foods like walnuts, soybeans, and flaxseed, is the real star in alleviating depression symptoms. In the 10-year study, Harvard University researchers found that the risk of depression was lower among women who consumed more ALA, a compound previously thought to have few health benefits.

Cottage Cheese

The mood booster: Tyrosine

Low-fat sources of protein, like egg whites and low-fat cottage cheese, are packed with tyrosine, an amino acid that aids the brain's production of norepinephrine and dopamine, two chemicals that influence motivation and reaction time. Early studies showed that tyrosine could be used to alleviate symptoms of depression, as it is an essential building block for the mood-regulating brain chemicals norepinephrine, dopamine and serotonin. Enjoy half a cup for only 90 calories and stock up on 14 g of filling protein.

Sunflower Seeds

The mood booster: Selenium

A Nutritional Neuroscience review of five studies on selenium and depression linked deficiencies in the mineral to poorer mood. Another study published in the Journal of Maternal-Fetal and Neonatal Medicine suggests that selenium can help prevent postpartum depression. When 44 postpartum women received 100 mcg of selenium daily, they scored lower on a postnatal depression scale. While Brazil nuts offer the biggest dose of selenium - a half-ounce serving packs 272 mcg - sunflower seeds are a lower-calorie snack option. A quarter cup of roasted seeds in their shells has about 70 calories and delivers 30 percent of the daily recommended value of selenium, while a single Brazil nut packs around 30 calories.

Lentils

The mood booster: Folate

 A study published in the Journal of Nutrition found that of the 2,682 middle-age Finnish men in the study, those whose diets contained the least folate were 67 percent more likely to suffer from depression. Research suggests that low levels of the B vitamin impair the metabolism of neurotransmitters, leaving your brain short on serotonin and dopamine. Get your folate fix with a cup of lentils, which contains 230 calories and provides 70 percent of your daily folate and 63 percent of your daily fiber.

Avocado

The mood booster: Oleic acid

Healthy fats, like Oleic acid, a monounsaturated omega-9 fatty acid, increases the feel-good chemical serotonin in the brain, keeping you calm. In a study published in the Archives of General Psychiatry, researchers at the University of Nivarra in Spain found that people who consumed a Mediterranean diet rich in fruits, nuts, fish and olive oil were 30 percent less likely to become depressed.

Citrus Fruit

The mood booster: Vitamin C

 In a study conducted by doctors at Jewish General Hospital in Montreal and published in the journal Nutrition, researchers found that when vitamin C-deficient hospital patients were supplemented with 500 mg of vitamin C twice daily for 1 week they experienced a 34 percent reduction in mood disturbance. Even the smell of citrus can put you in a better state of mind. When participants in an Ohio State University study smelled lemons, they reported greater improvements in mood and had higher levels of norepinephrine compared with when they sniffed lavender or unscented water.

Low-Fat Milk

The mood boosters: Vitamin D, calcium, whey protein

While research has linked deficiencies in vitamin D and calcium - two essential nutrients found in milk and fortified juices - to mood disorders, like depression, seasonal affective disorder, and PMS, a lesser-studied compound in dairy products can help you keep your cool in high-stress situations. An American Journal of Clinical Nutrition study found that alpha-lactalbumin, a component of whey protein, improves cognitive performance in stress-prone individuals by increasing levels of tryptophan and serotonin in the brain.

Bananas

The mood booster: Magnesium

 Bananas are a good source of magnesium, a mineral that helps the brain deal with stress and may help boost mood, too. In a study of 5,700 adults published in the Australian and New Zealand Journal of Psychiatry, researchers linked higher levels of anxiety and depression to study participants with lower magnesium intake. Bananas are also packed with potassium, which helps boost alertness, tryptophan, an amino acid that aids the body in producing mood-boosting serotonin and mood-stabilizing vitamin B6.

 

Above studies referenced from the Mclatchy-Tribune News Service