They're a waistline-friendly snack known to boost heart health[2] , and loaded with enough other health benefits to land them a coveted spot on our list of the 50 healthiest foods of all time[3] .


But before you get carried away with a heaping handful, consider a few of the lesser-known facts about this beneficial bite. Here are a few surprising facts about almonds.




Almonds Are In The Peach Family


peach pit almond


The nut we know as the almond is technically the hard-shelled fruit[4] of the almond tree, itself a member of the prunus family. This category of stone fruit[5] encompasses trees and shrubs that produce edible fruit like cherries, plums, peaches and nectarines. (Don't the pits look a little bit like nuts, now that you think about it?)


Take a look at how they grow:

almond tree


As relatives, almonds and fruit in the same family can both cause similar allergic reactions[6] .




Almonds Are Among The Lowest-Calorie Nuts


Per one-ounce serving, almonds are tied with cashews and pistachios at 160 calories[7] , Health.com reported. They also have more calcium than any other nut[8] , plus nearly 9 grams of monounsaturated, heart-healthy fats[9] , 6 grams of protein and 3.5 grams of fiber per serving.




Almonds Are Best For You Raw Or Dry Roasted


roasted almonds


When you see packaged nuts with the word "roasted" on the front, consider this: They may have been heated in trans or other unhealthy fats[10] , Judy Caplan, R.D., told Health.com. Look for the words "raw" or "dry-roasted" instead.




"Raw" Almonds Aren't Exactly "Raw"

Two salmonella outbreaks[11] , one in 2001 and one in 2004, were traced back to raw almonds from California. Since 2007, the USDA has consequently required almonds to be pasteurized[12] before being sold to the public. The FDA has approved several methods of pasteurization[13] "that demonstrate effectiveness in achieving a reduction of possible contamination in almonds while not impacting their quality," according to the Almond Board of California. However, opponents of almond pasteurization argue that one such method, propylene oxide processes[14] , poses health risks greater than that of salmonella, since the EPA has classified propylene oxide as a human carcinogen in instances of acute exposure.




You Can Make Your Own Almond Milk


homemade almond milk


All you'll need are some almonds, a sweetener of your choosing, some water and a food processor[15] !




Almonds Pack Quite The Disease-Fighting Punch

According to 2006 research, just one ounce of almonds contains about the same amount of polyphenols[16] , antioxidants thought to help fight off heart disease and cancer, as a cup of broccoli or green tea[17] . However, considering that the research was funded at least in part by the Almond Board of California[18] , we may have to take this one with a grain of salt.



Also on HuffPost:




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  • Boost Your Brain


    A <em>Journal of Alzheimer's Disease</em> study published earlier this year showed that <a href="http://iospress.metapress.com/content/w012188621153h61/fulltext.pdf" target="_hplink">eating walnuts</a> as part of a Mediterranean diet is linked with protection from brain functioning decline that occurs with aging.

    The study, conducted by Spanish researchers, included 447 people ages 55 to 80. Walnuts were linked with improved memory in the study participants, researchers found, but other kinds of nuts were not.




  • Lower Cholesterol


    Eating nuts -- including walnuts! -- could help to lower your cholesterol if you consume them daily, according to a 2010 study.

    WebMD reported on the study, published in the <em>Archives of Internal Medicine</em>, which showed that eating about 2.4 ounces of nuts a day is linked with 7.4 percent <a href="http://www.webmd.com/heart-disease/news/20100510/eating-nuts-daily-lowers-cholesterol" target="_hplink">lower "bad" LDL cholesterol levels</a> and 5.1 percent lower total cholesterol.




  • Might Decrease Breast Cancer Risk


    Marshall University researchers found that eating walnuts every day seemed to halve the risk of mice <a href="http://www.medicalnewstoday.com/articles/233894.php" target="_hplink">developing breast cancer</a>, Medical News Today reported.

    Their findings, published in the journal <em>Nutrition and Cancer</em>, showed that even in the <a href="http://www.medicalnewstoday.com/articles/233894.php" target="_hplink">mice fed walnuts</a> that <em>did</em> develop cancer, their tumors were smaller and fewer, according to Medical News Today.




  • Slow Down Prostate Cancer (In Mice)


    Mice engineered to develop prostate cancer that were fed diets high in fat, including walnuts, had <a href="http://www.sciencenews.org/view/generic/id/57701/title/Science_%2B_the_Public__Walnuts_slow_prostate_cancer_growth" target="_hplink">slower-growing tumors</a> than mice fed diets that were low in fat, Science News reported.

    The researchers for that study, who presented their findings in 2010 at a meeting of the American Chemical Society, said that a possible reason for this effect are the <a href="http://www.sciencenews.org/view/generic/id/57701/title/Science_%2B_the_Public__Walnuts_slow_prostate_cancer_growth" target="_hplink">omega-3 fatty acids</a> and alpha linolenic acids found in walnuts, Science News reported.




  • Chock Full Of Antioxidants


    Walnuts beat all the rest when it comes to maintaining a healthy ticker, according to a study presented last year the American Chemical Society.

    WebMD reported on the findings, conducted by researchers from the University of Scranton, which found that walnuts have <a href="http://www.webmd.com/food-recipes/news/20110328/walnut-may-be-top-nut-for-heart-health" target="_hplink">more antioxidants</a> than other nuts like cashews, hazelnuts, pecans and pistachios.

    "This study tells us something important about the <a href="http://www.webmd.com/food-recipes/news/20110328/walnut-may-be-top-nut-for-heart-health" target="_hplink">composition of walnuts</a>," Dr. David Katz, M.D., MPH, the director of the Yale University Prevention Research Center, who was not involved with the study, told WebMD.




  • Health Benefits of Walnuts


    Flat Belly Diet creator Cynthia Sass, MPH, RD offers tips for adding tummy-flattening walnuts to your diet.