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Are Purple Grapes The Most Nutritious? How Do Grapes Enhance Your Health?

Updated on July 31, 2012

Recent discoveries concerning the remarkable health benefits of a natural substance called resveratrol has boosted the sales of supplements containing the nutrient. Resveratrol benefits include the ability to combat aging and disease such as heart disease, various types of cancer and fatty liver disease as well as promote a longer, healthier life.

Scientists have discovered that certain human genes, which are activated when stressed, have the ability to enhance health through protein, fat and carbohydrate metabolism. For over fifty years it has been known that restricting calorie intake activates these gene. Animals who have had their calories cut by forty percent were found to live longer and healthier lives. Although this method is highly effective, few people who would be interested in a diet that left them feeling hungry all of the time.

Scientist have being conducting experiments with thousands of different plant compounds in recent years to try to discover a way to activate this health enhancing gene without the need to cut calories. There have been several plant compounds that have the ability to activate the gene, but the most effective has beenĀ resveratrol.

The compound can be found in a number of foods which include peanuts, red wine, grapes, grape juice and dark chocolate. The major drawback of consuming this compound through food sources is far too much food would have to be consumed in order to benefit from this nutrient. For instance, a bottle of red wine typically contains only five and ten milligrams of resveratrol, but the dosage believed necessary to activate the gene that enhances health is between fifty to one thousand milligrams daily.

Although food does not contain enough of the compound to be effective, a healthy diet is still a necessary first step to seeing it activate the health enhancing gene. In fact, consuming unhealthy foods such as those that contain toxic fats, chemicals, antibiotics, hormones and those that have no nutritious value can cause this same health enhancing gene to create inflammation in the body, leading to diseases such as cancer, stroke, Alzheimer's and heart disease.

Supplementation in addition to a healthy diet is the way to activate the gene. The exact dosage from supplements is still uncertain. Studies with animals have shown that is is somewhere between fifty and one thousand milligrams daily. There appears to be no toxic side effects from taking the compound, even in humans that have been given up to five thousand milligrams daily.

Supplements can be found containing almost one hundred percent resveratrol, or in combination with other nutrients. Combinations that contain added resveratrol include probiotics combined with dark chocolate, grape seed and quercetin, green tea and omega 3 fatty acids with and in liquid form containing a combination of blueberry juice, mangosteen juice and acai juice.

Grapes are a great source of resveratrol and other nutrients. Grape nutrition includes saponins, resveratrol, quercetine, gallic acid, phosphoric acid, calcium, magnesium, tanin, manganese, pectins, phlobaphene, iron, silicic acid, enzymes, folic acid, B1,2,6,12 and Vitamin K.

Grapes have been effective in improving many health conditions:

High cholesterol - Saponins present in grape skin prevent the absorption of cholesterol by binding with it and prevent inflammation. They also contain a compound capable of lowering cholesterol levels.

Constipation - Grapes contain organic acid and cellulose which are very effective at eliminating constipation. They also prevent chronic constipation by toning the stomach and intestines.

Asthma - Grapes can improve asthma because they have the ability to increase moisture in the lungs.

Heart disease - Nitric oxide levels in the blood are increased by eating grapes. Nitric acid has the ability to prevent blood clots which cause heart attacks. The antioxidants in grapes prevent the oxidation of LDL cholesterol which blocks blood vessels.

Fatigue - Light colored grapes help replenish iron in the body, which helps prevent fatigue. Grape juice also increases energy and the antioxidants boost the immune system.

Breast cancer - Recent studies have shown that purple Concorde grape juice has the ability to shrink mammary tumors.

Macular degeneration - Research has shown that phenols found in red and white wine may inhibit the oxidation of the macula, which is responsible for sharp vision.

Alzheimer's disease - Studies have shown that grapes can improve brain health and stop the development of neurodegenerative diseases. Resveratrol, one of the ingredients found in grapes has been found to improve blood flow to the brain by 30 percent, thus reducing the risk of stroke.

Indigestion - Grapes help relieve stomach irritation which can lead to indigestion.

Kidney disorders - Grapes have the ability to reduce the acidity of uric acid, which reduces the work of the kidneys.

Antibacterial activity - Red wine and purple grape juice have been found effective at inhibiting the bacteria that causes stomach ulcers as well as Salmonella and E. coli.

How to Choose Grapes

Imported grapes have been frequently found with a high level a pesticide residue. Therefore, it is a good idea to avoid imported grapes unless they are grown organically. In the U.S. they were also found to be fairly high in pesticide residue. Organic grapes have been found to have up to 50% more antioxidant power than conventionally grown grapes. The most nutritious grapes with the greatest health benefits are purple grapes. When choosing grapes, look for grapes that are plump and wrinkle free. They should be firmly attached to the stem and not leaking any juice. Choose fully ripened grapes to receive the most antioxidant value.

Grapes tend to spoil and ferment at room temperature so they should always be kept in the refrigerator. Unwashed grapes should be loosely wrapped in a paper towel and then placed in a plastic bag. Storing them this way will allow them to last for several days in the refrigerator.


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    • AnniesHealthTalk profile image


      6 years ago from United States

      Great information. Thumbs up on recommending organic grapes!

    • Chris Achilleos profile image

      Chris Achilleos 

      6 years ago

      This is very interesting, I really enjoyed reading. Had no idea that grapes could be beneficial for so many health conditions. Voted up, interesting and useful!

    • profile image

      Aerok apling 

      7 years ago

      grapes is the best stuff for me.

      i love to add other healthy fruits and make fruit punches

      yeah yeah

    • profile image

      jasime cooper 

      7 years ago

      this is a cool wedsite

    • crystolite profile image


      7 years ago from Houston TX

      Outstanding information that really widen my view on the use of grape.thanks for sharing.

    • ncuxapa_ profile image


      7 years ago

      I am starting to eat grapes all the time !

    • lemonadedieter profile image


      7 years ago from USA

      I love grapes, but I don't endulge too much on it because of the high sugar content. After reading your hub, perhaps it wouldn't do harm to eat a little bit more.

    • Jamiehousehusband profile image


      8 years ago from Derbyshire, UK

      Well as I bought a large box of beautiful purple/red seedless grapes yesterday and tonight's dinner is steak with sauce bearnaise, followed by chocolate crunch pie and cheese board with these lovely grapes, all washed down with red wine, I guess we're in for a healthy meal after reading this - great info as I love to cook and serve really good ingredients. Thanks.

    • Phyllis Doyle profile image

      Phyllis Doyle Burns 

      8 years ago from High desert of Nevada.

      Wonderful information on grapes! I am going to start buying purple grapes more often. I love the taste. Thank you for sharing all this great information.

    • profile image


      9 years ago

      Hi Admin!!!!

      Thanx for best info on grapes and fine health.... Thanx again

    • JPSO138 profile image


      9 years ago from Cebu, Philippines, International

      I never knew that grapes have these following effects. All I knew was that grapes can make a good wine. Thanks for sharing.

    • johnsocrates profile image


      9 years ago from Kalibo, Aklan

      Very good article. So entertaining and fun to read. It really could boost up reader's interest to read. Great Job. For more about grapes, this link could be helpful too:

    • patriciojose13 profile image


      9 years ago

      Hey, great article. Very informative and helpful for beginners. I am inviting you and your readers to check out this site:

    • sime profile image


      9 years ago from pakistan

      Grapes are very usrful for health.

    • profile image

      from hereandthere 

      9 years ago

      Great planning a series on wines from India...will link your piece when i publish that. very informative, and well written.

    • Bruce Elkin profile image

      Bruce Elkin 

      9 years ago from Victoria, BC Canada

      THanks Steve. I've been eating more grapes lately because I've cut down on wine. I didn't know all this interesting and useful info about them, though. Now I do. Much appreciated!

    • Tom T profile image

      Tom T 

      9 years ago from Orange County, CA

      Wow, I'm going to have to eat more grapes from the local organic fruit stand. Thanks for the infopacked page

    • Kulsum Mehmood profile image

      Dr Kulsum Mehmood 

      9 years ago from Nagpur, India

      Grapes are my favorite fruit and I love them. Very educative article stevemark.

    • RGraf profile image

      Rebecca Graf 

      9 years ago from Wisconsin

      I love grapes and knew they were healthy, just not how healthy. Thanks for the info.

    • countrywomen profile image


      9 years ago from Washington, USA

      Steve- Thanks for the tip "ripe organic purple grapes" will buy those next time onwards.

      Thanks Misty I didn't know certain fruits are a big NO for pets.

    • Shalini Kagal profile image

      Shalini Kagal 

      9 years ago from India

      Constant Walker - he's got a great one on Pomegranate Juice :)

    • Judy Jackson profile image

      Judy Jackson 

      9 years ago

      Great Hub on one of my favorite fruits. Will forward this on.



    • profile image

      Mark Salinas 

      9 years ago

      I am a big fan of grapes. thank you for the post. A wealth of useful information!

    • Constant Walker profile image

      Constant Walker 

      9 years ago from Springfield, Oregon

      Wow! The wonders of fruit, eh? You could probably easily do a series about the benefits of various fruits.

      If you do... you've gotta start with pomegranites!

    • stevemark122000 profile imageAUTHOR


      9 years ago from Southern California

      Thanks for your comments everyone!

      quicksand, bottled juices and wines have some good benefits but to receive the maximum benefits you will need to buy ripe organic purple grapes.

    • quicksand profile image


      9 years ago

      Shalini, great minds think alike! Especially yours!!!

    • Shalini Kagal profile image

      Shalini Kagal 

      9 years ago from India

      Thanks Steve for a great hub on grapes - I noticed quicksand's comment - strange, many people in India too advocate washing grapes in salt water before eating them - I wonder why!

    • jim10 profile image


      9 years ago from ma

      I love grapes. The red globe grapes are one of my sons favorite snacks. I was always surprised since they contain seeds. but, he won't eat the seedless ones. I believe the seeds are actually the healthiest parts of grapes. They sell grape seed oil and extract in lots of nutrition stores. It is nice to see all of their benefits.

    • mistyhorizon2003 profile image

      Cindy Lawson 

      9 years ago from Guernsey (Channel Islands)

      Great advice, but just worth mentioning you should never feed grapes to your dogs as for some reason it causes kidney failure within a matter of hours. I know you didn't suggest feeding them to your dogs here, but some people may think they could have the same health benefits for their pets. Great hub :)

    • profile image


      9 years ago

      Red wine and grapes have increased my health but thanks for the confirmation!

    • Dottie1 profile image


      9 years ago from MA, USA

      Thanks for all this wonderful information about grapes. You would think something this simple as eating grapes to lower cholesterol would have been suggested years ago by my doctor instead of prescription drug which I refuse!

    • quicksand profile image


      9 years ago

      There is a belief that soaking them overnight in salt water helps remove the pesticide. Any truth in that?

      Quite apart from that, you've mentioned grape juice here. Do you refer to bottled grape juice?

      Thanks for the valuable info.:)

    • Ande Moore profile image

      Ande Moore 

      9 years ago from Austin, Texas

      Thanks for the article. I got on the grape kick awhile ago, esp. the juice. They really do help. Enjoy the week.

    • Netters profile image


      9 years ago from Land of Enchantment - NM

      I never knew all that about grapes. I'll have to get some. Thank you for the great article. Very informative.


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