Nuts and Its benefits

Nuts and its benefits

Nuts are abundant in nature. Nuts such as almond, pistachios, walnut, hazelnut, peanut are so familiar to our diet. But the question is do we consume enough nuts in our life to make a visible effect in our health? Here are some excerpts I’ve taken from various sources in the internet and to my surprise they do make me want to eat more nuts, consistently.

Benefits of eating nuts

Other than its crunchy texture and delicious taste nuts do offer a whole array of benefits for human. Some nuts has more oil than others. Nuts are one of the best plant sources of protein. They are rich in fiber, phytonutrients and antioxidants such as Vitamin E and selenium. Nuts are also high in plant sterols and fat - but mostly monounsaturated and polyunsaturated fats (omega 3 - the good fats) which have all been shown to lower LDL cholesterol.(1)

In 1992 researchers working on the Adventist Health Study at Loma Linda University in California reported that those eating nuts daily had up to 60% fewer heart attacks than those who ate nuts less than once per month. The beneficial effect of nut consumption was found for men, women, vegetarians, meat-eaters, fatter people, thinner people, the old, the young, those who did much exercise and those who did little exercise. The study was large, comprising 31,000 white Californian Seventh Day Adventists and similar benefits of nut eating were subsequently found for African Americans. Prior to the publication of these results, nutritional advice had usually been to minimise nut consumption on the grounds that they were a "fatty" food.(1)

Researchers found that people who eat nuts regularly have lower risks of heart disease. In 1996, the Iowa Women's Healthy Study found that women who ate nuts >4 times a week were 40% less likely to die of heart disease. Two years later, another study conducted by the Harvard School of Public Health found a similar result in another group of women subjects. Furthermore, potential heart health benefits of nuts were also found among men. In 2002, the Physician's Health Study found that men who consumed nuts 2 or more times per week had reduced risks of sudden cardiac death. (1)

Nuts are a nutrient dense food and contain high amounts of dietary fiber. They are high in unsaturated fats, while low in saturated fats. They also contain folic acid, copper, magnesium, Vitamin E and arginine. A study conducted at The Center of Health Research at Loma Linda University in 1999, found that nuts go way beyond good nutrition. The study found that eating one to two ounces of nuts a day, helped to lower LDL cholesterol by eight to twelve percent. They also found that frequent nut consumption, by individuals, lowered their risk of coronary disease by up to fifty percent. It’s thought that the cardiovascular benefits that nuts provide include a reduction of LDL cholesterol. Also, the antioxidant mechanism of Vitamin E content within the nut and the higher levels of nitric oxide within the blood, from arginine, seems to help the blood vessel lining and platelets. (2)

Several epidemiological studies have revealed that people who consume nuts regularly are less likely to suffer from coronary heart disease. Recent clinical trials have found that consumption of various nuts such as almonds and walnuts can lower serum LDL cholesterol concentrations. Although nuts contain various substances thought to possess cardioprotective effects, scientists believe that their Omega 3 fatty acid profile is at least in part responsible for the hypolipidemic response observed in clinical trials.

In addition to possessing cardioprotective effects, nuts generally have a very low glycemic index (GI). Consequently, dietitians frequently recommend nuts be included in diets prescribed for patients with insulin resistance problems such as diabetes mellitus type 2. (3)

The amino acid arginine is also present in nuts which, can help overcome erectile dysfunction. Arginine has also been found to boost immunity and lower elevated blood pressure levels. In addition, certain nuts like pecans, walnuts and almonds contain tryptophan - another amino acid that stimulates the production of the 'feel good' hormone serotonin in your brain, which can help ward off depression and promote a more relaxed state. (4) Nuts can lower your risk of heart disease by as much as 35%.(4)

Another reason to eat more peanuts is because they're an excellent source of B vitamins, including folate, riboflavin and niacin. All of which are essential for healthy metabolism and growth; a deficiency of them can cause muscle degredation and fatigue.(4)  
Like peanuts, walnuts also have important benefits for your heart because of the omega 3 and omega 6 fatty acids they contain. Both omega 3 and omega 6 are also needed for maintaining healthy joints and brain function. (4)

Another must are Brazil nuts. A recent study conducted at the University of Illinois in the US suggests that Brazil nuts may play a vital role in preventing breast cancer. According to the scientists who carried out the study, this benefit is probably a result of the high amounts of selenium they contain. (4)

Selenium is a powerful antioxidant that helps neutralise harmful free radicals that can attack healthy cells and increase the risk of serious conditions like heart disease and cancer - including breast cancer as already mentioned, and lung, bowel and prostate cancer. (4)

The list of health benefits attached to each individual nut is endless. Other nuts that are particularly good include: pistachios for their high iron, protein and fibre content and high levels of magnesium, which helps control blood pressure; hazelnuts because they are one of the richest sources of the antioxidant vitamin E; and cashew nuts for their high iron content which is needed to make haemoglobin - the red pigment in the blood.(4)

Which nuts to eat?
The definitive answer to this question is currently unknown. In the Adventist Study about about 32 percent of the nuts eaten were peanuts, 29 percent almonds, 16 percent walnuts, and 23 percent other types.(1)

These researchers did not ascertain whether the nuts were fresh, oil-roasted, or dry-roasted. The Nurses' Study found that peanuts, which are legumes, appeared to be just as effective in reducing the risk of coronary heart disease as tree nuts. Experiments where volunteers were fed nuts as part of their diet for several weeks have found that walnuts, almonds, hazelnuts, peanuts, pecans, pistachio nuts and macadamia nuts all alter the composition of the blood in ways that would be expected to reduce the risk of coronary disease. Chestnuts, a nut unusually low in fat, do not yet seem to have been studied. The best advice currently is probably to eat a variety of nuts.(1) Therefore, eating a broad range of nuts is best as they each have specific health benefits.(4)

Walnuts though, because they contain n-3 fatty acids, may be particularly beneficial, but this requires further study. Coconuts, on account of their high saturated fat content, should probably be avoided.(1)

After all eating a generous amount of nuts in you life won’t make you nuts at all!

(1) http://www.healthcastle.com/nuts-benefits.shtml
(2) http://food-facts.suite101.com/article.cfm/the_benefits_of_nuts
(3) http://en.wikipedia.org/wiki/Nut_(fruit)
(4) http://www.thehealthierlife.co.uk/natural-health-articles/nutrition/health-benefits-of-nuts-00841.html