Dr. Becky Maes - Is It Bad For You? Approved by Dr. Becky Maes

Are Grapes Bad For You?



Short answer

Grapes, like any fruit, are a great addition to the human diet. However, similar to other quality foods, they should be consumed in moderation due to their high sugar content.



Long answer

There are many different varieties of grapes across the world. The uses are numerous, from jellies and jams to juices, raisins, and wines. In addition to the many products enjoyed that are made from grapes, the best by far is enjoying some tasty, in season, and organically grown grapes.

Grapes contain antioxidants which are linked to slowing and preventing cancers of the mouth, esophagus, pancreas and colon. Grapes also contain a flavonoid, quercetin, which is a natural anti-inflammatory that works to protect against the damage caused by high levels of cholesterol. Lower cholesterol is key to the prevention of heart disease.

Grapes also contain high levels of fiber and potassium, both essential nutrients for good health. High potassium levels can reduce the risk of stroke, prevent loss of muscle mass and help preserve bone density. The high potassium levels in grapes also are effective in lowering blood pressure.

Grapes have a high water content which can keep you hydrated. The high water and fiber content are very useful in aiding in the relief of constipation. Grapes have been linked to the prevention of osteoporosis and other age-related conditions. Grapes are actually berries with potential health benefits ranging from cancer prevention to reducing constipation.

Grapes have many health benefits, however, these benefits can be countered by the use of pesticides. Pesticide residues on grapes are problematic and can cause health problems. As with most products, especially produce, many grapes are Genetically Modified. This process allows farmers to inject chemicals into the food and cross-pollinate, in order to increase their yield. This practice is subsidized by the Food and Drug Administration (FDA), and the FDA benefits from the practice. GMOs are known to cause a host of problems. Choosing certified organic grapes will guarantee that you are not consuming pesticide residues. GMOs are a fairly new practice with a lot of experimental projects and little research to protect the consumer. Many preliminary research studies have found that GMOs are known carcinogens, causing gastrointestinal disorders, neurological disorders, and numerous other diseases.

The average cup of red seedless grapes contains a little over 23.37 grams of sugar. The sugar comes in different variations; each have their own effect on the body. Sucralose (table sugar) makes up less than a quarter of a gram of sugar. Though that is the most harmful sugar, the amount makes it virtually irrelevant. Glucose makes up 10.87 grams of the sugar content. It is the sugar that is used for energizing the body. Typically derived from sources, such as diverse fruits, vegetables, and honey, fructose makes up 12.28 grams of the sugar in a cup of grapes. If honey and fruit were your only source of fructose, your body could easily process the form of sugar in a healthy way. However, synthetic, harmful forms of fructose present in numerous restaurant foods and markets are littered with altered fructose, such as that in high fructose corn syrup. This product is miles away from the fructose consumed in grapes. Fructose is processed in the liver. When the liver is overloaded by fructose, it can be a toxic mess. Not only does it put great stress on the liver, but it can also raise cholesterol by lowering High-Density Lipoprotein (HDL). The recommended daily serving of fruits is 2 one-cup servings a day. The sugar amounts discussed above were based on half of the daily dosage.

Fruits are an essential part of the human diet. However, just like any other food/beverage, it must be consumed in moderation.

Possible short-term side effects

  • blood sugar spike

Possible long-term side effects

  • weight gain
  • lowers hdl levels
  • neurological disorders (gmos)
  • cancer (gmos)
  • gastrointestinal disorders (gmos)
  • unknown effect due to limited research (gmos)


  • relief of constipation
  • relief of indigestion
  • lower cholesterol
  • reduce risk of stroke
  • lowering blood pressure

Thank you for your feedback!

Written by DeeAnne Oldham
Published on: 04-28-2016
Last updated: 12-10-2016

Thank you for your feedback!

Written by DeeAnne Oldham
Published on: 04-28-2016
Last updated: 12-10-2016

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