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Tuesday, January 24, 2012

Walnuts lower cholesterol- level in blood

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Scientists have discovered that walnuts contain good percentage of anti-oxidants. Eating 7 to 10 walnuts per day can help ward off diseases, slowing ageing process and lower cholesterol levels in blood.
The researchers from the University of Scranton, Pennsylvania have found that walnuts contain very high levels of Polyphenol which is an anti-oxidant. It can protect the body from tissue- damaging molecules. After conducting tests on nine commonly eaten types of nuts they found that walnuts contained the most Polyphenol than others. According to the scientists, walnuts rank above Brazil nuts. Here are some more facts about walnuts being presented by earlier researches.
Walnuts are a rich source of omega-3 fat, alpha- linolenic acid. It improves artery function after a meal containing high fat level. A study by Spanish researchers Cortes B, Nunez I and J Am Coll Cardiol, walnuts may be more important than olive oil in Mediterranean- type food as it can promote the health of hearth.
Walnuts are important for our brain too. It is because of omega-3 fats found in them. Structurally, our brain is more than 60 per cent fat and omega-3 fats are essential for the working of brain cells.
According to a study- “Epidemiological studies in various countries including the U.S. suggest a connection between increased rates of depression and decreased omega-3 consumption, and in children, the relationship between low dietary intake of omega-3 fats and ADHD has begun to be studied. A recent Purdue University study showed that kids low in omega-3 essential fatty acids are significantly more likely to be hyperactive, have learning disorders, and to display behavioral problems. In the Purdue study, a greater number of behavioral problems temper tantrums, and sleep problems were reported in subjects with lower total omega-3 fatty acid concentrations. More learning and health problems were also found in the children in the study who had lower total omega-3 fatty acid concentrations.”

1. Walnut  : green fruits

Over 2,000 scientific studies have demonstrated the wide range of problems associated with omega-3 deficiencies. The American diet is almost devoid of omega-3s, except for nuts, such as walnuts, seeds and cold-water fish. In fact, researchers believe that about 60% of Americans are deficient in omega-3 fatty acids, and about 20% have so little that test methods cannot even detect any in their blood. 

2. walnuts: dried fruits
It has also been found by researchers that omega-3 fats prevent gall bladder diseases and gall- bladder stones. Thus intake of walnuts in desired quantity may help protect gall bladder from stones and diseases.
Walnuts have also been reported to contain bio-available melatonin. Melatonin is a hormone produced in our body by the Pineal gland which induces or regulates sleep. Thus eating walnuts on regular basis can help prevent sleep-disorders also.
According to a research - “Melatonin can help improve sleep for night shift workers and people suffering from jet lag, but maintaining healthy levels of this hormone is important for everyone over the age of 40 since the amount of melatonin produced by the human body decreases significantly as we age, and this decrease in antioxidant protection may be related to the development of free radical-related diseases later in life.” 
It has also been reported that - … by helping the body resist oxidative stress (free radical damage), walnuts may help reduce the risk of cancer and delay or reduce the severity of cardiovascular disease and neurodegenerative diseases such as Parkinson's or Alzheimer's disease. Walnuts, best known as a heart-healthy nut, are also a rich source of another highly cardio-protective nutrient: omega-3-fatty acids, so Reiter and his team will next investigate possible synergy between walnuts' omega-3 fats and melatonin. To us at the World's Healthiest Foods, this sounds familiar theme in Nature's symphony in which whole, wholesome foods each provide a wealth of nutrients whose harmony promotes our optimal health.
Key Words: omega-3 fats, Polyphenol, cholesterol, anti-oxidant

Image Credit: 1.graduallygreener.worldpress.com, 2.anut.com

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