Thursday, October 22, 2020

Are Nuts Good for Your Health?

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Whatever people think of Harvard, few would accuse its heavy-duty scientists of being health nuts. But Harvard researchers may deserve that designation. After all, they have teamed up to show that nuts are actually healthy, especially for men at risk for heart disease.

Harvard Study Results

A 2013 report from Harvard Medical School and the Harvard School of Public Health looked at how eating nuts affects the health of men and women. The study evaluated 42,498 men enrolled in the Health Professionals Follow-up Study and 76,464 women enrolled in the Nurse’s Health Study. None of the participants had known heart disease, cancer or stroke when they enrolled in the studies. Researchers began tracking the subjects in the early 1980s. And they continue to follow many of the volunteers today.

What’s in a Name?
Peanuts, the most popular nuts of all — are not technically nuts. Nuts are one-seeded fruits that grow on trees. Peanuts grow in the ground. They are legumes, members of the bean and pea family of plants. Peanuts do have a tough outer shell, like trun nuts do. And they share the nutritional characteristics of nuts. In fact, the Harvard study found that peanuts were as beneficial as true nuts. But the technical distinction does have one important practical consequence: Most people who are allergic to peanuts can safely eat tree nuts.

Each subject submitted detailed diet and health information at the start of the study and every 2 to 4 years thereafter. This continued for up to 30 years. According to the results, people who ate nuts fared better than those who did not. And the more nuts eaten, the better the results. 

  • People who ate just one portion of nuts a week enjoyed a 7% lower death rate than people who didn’t eat nuts.
  • Eating nuts 5 or 6 times a week was linked to a spectacular 20% reduction in the death rate.
  • Nuts appeared to offer protection from a wide range of problems, including heart disease, cancer and lung disease.  And the results held up even after smoking, drinking, body fat, exercise, vitamins and other dietary factors were taken into account.

It’s not as nutty as it sounds: Eating nuts promotes good health.

All the subjects in the Harvard study were health care professionals. But do nuts reduce the risk of illness risk in other population groups?

They do.

Scientists have reported that nuts appear to protect people as diverse as Seventh Day Adventists in California, women in Iowa, healthy men and women in the Netherlands, and heart attack survivors in India.

How Nuts Help

Doctors don’t know for sure, but they have several theories.

  • Nuts help reduce blood cholesterol levels, either by replacing other, harmful foods or by lowering cholesterol on their own.  
  • Nuts are high in fat. But these are “good” fats, which may reduce the risk of abnormal heart pumping rhythms that can sometimes cause sudden cardiac death.  
  • According to a Spanish study, nuts improve endothelial function, allowing arteries to widen when tissues need more oxygen.

What’s in Nuts?

Nuts pack many nutrients in a small package.

  • Nuts have no cholesterol. And they contain only tiny amounts of saturated fat. Instead, they have lots of mono- and polyunsaturated fats that resemble the fats in olives and other vegetables that may help protect the heart.
  • Nuts may also help by providing vitamin E and other antioxidants.
  • They are also rich in protein, B vitamins, potassium, magnesium and other minerals.
  • Nuts are an excellent source of fiber, which reduces the risk of heart disease.

Before you go nuts, keep in mind that:

  1. Nuts are high in fat, which makes them high in calories. All fats, whether they are harmful saturated fats or healthful unsaturated fats, have 9 calories per gram. So unless you want to gain weight, don’t add nuts to your diet without cutting a similar number of calories. Fortunately, the new Harvard study reported that people who ate nuts regularly actually gained less weight than people who didn’t eat nuts.
  2. Many processed nuts that are so handy for snacks are fried in oil and/or laced with salt, which can raise your blood pressure.

Nuts can be part of a balanced, healthful diet. And they can help reduce your risk of heart disease. 

Jonathan
Medically trained in the UK. Writes on the subjects of injuries, healthcare and medicine. Contact me jonathan@cleanseplan.com

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