The pros and cons of juicing (2024)

You just went bananas at the local farmers market. You bought 2 bags of apples, 3 stalks of celery, 5 carrots, 2 bunches of kale, and a few pieces of ginger. But when you get home, reality sets in: You have no idea what to do with any of it. And it won’t all fit in your refrigerator.

One way to make sure none of it goes to waste: juicing. That’s when you cut up all the ingredients, put them in a blender or juicer, and then strain out all but the liquid, removing any pulp. Not only will it save you space, but it’ll also be a great source of fresh fruits and vegetables in your diet.

But while that brightly colored juice might taste great and contain vitamins and nutrients, it might not always be the healthiest option. Below, learn some of the pros and cons of juicing.

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Pro: Juice is packed with healthy vitamins and nutrients

The product you’ll get from all that blending will be a co*cktail rich in vitamins and nutrients — and a good source of hydration.

“Juicing is a great method of hydrating with exotic flavors that naturally come from fruits and vegetables,” says Sharon Zarabi, a registered dietitian. She’s the director of program development at the Katz Institute for Women’s Health, Northwell.

“Our bodies can easily absorb the vitamins in liquid form,” Zarabi says. “For those of us who have digestive issues, juicing is an easy way to boost your immune system with a dose of vitamins without putting too much demand on the stomach.”

Zarabi also says juicing is a good way to get disease-fighting minerals and phytochemicals into your diet. Phytochemicals are a type of nutrient that may help reduce the risk for certain chronic conditions such as cancer and heart disease.

Pro: Juice can help protect your eyes, skin and immune system

The flavors, vitamins and nutrients you get from your juice really depend on the types of fruits and veggies you use. For example, here’s what that farmers market haul might look like:

  • Apples are a great source of vitamin C, which helps your body’s ability to fight off infection and heal wounds by supporting your cells. They’re also rich in the flavonoid quercetin, which has antioxidant and anti-inflammatory effects, neutralizing harmful free radicals.
  • Celery may help lower your blood pressure and maintain healthy digestion.
  • Carrots are a great source of vitamin A, which supports eye health. It’s a building block of rhodopsin, a type of protein in your retina that allows light to enter your eye.
  • Spinach, kale and other leafy green vegetables are also packed with vitamin A, which helps protect skin against the harmful UV rays of the sun. Two antioxidants, lutein and zeaxanthin (found in spinach, for example), can also help reduce your risk of developing chronic eye diseases such as macular degeneration and cataracts.
  • Ginger has anti-inflammatory qualities and can be used to help treat nausea. If you have an upset stomach, it can speed digestion, bringing relief sooner. And at least one study linked it to being effective in fighting various gastrointestinal cancers.

Mix and match different kinds of fruits and vegetables to see which juices taste and make you feel the best.

Pro: Juice is great if you’re on a low-fiber diet

When you strain out all that pulp, you’re really getting rid of the fiber in the fruits and vegetables. So juicing can be good for those who need to be on a very low-fiber diet, says Jill Weisenberger, a registered dietitian and creator of the free guide Can I Eat That with Prediabetes?

That could include people who are:

  • Receiving cancer treatments such as chemotherapy or radiation
  • Recovering from intestinal surgery
  • Having difficulty digesting food

“But this would not be a typical person,” Weisenberger says. Most people don’t get enough fiber.

The recommendation? Eat between 25 and 30 grams of fiber a day. The average intake among U.S. adults is about 15 grams per day. A diet rich in fiber can help reduce cholesterol and help your body balance blood sugar, which is a major factor in diabetes.

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Con: Fruits and vegetables are best served whole

It might be a good idea to stuff some of that bounty you picked up at the farmers market in your fridge after all.

“There’s a reason Mother Nature created the plant in its whole part,” Zarabi says. “There’s no scientific evidence that extracted juices are any healthier than whole foods. More vitamins do not always equate to better, because the body can only absorb so much at one time.”

Con: Juice isn’t better than water at hydrating you

While the liquid portion of the fruit and vegetable plant can help you hydrate, it’s not the best way to do it.

Juice provides hydration and carbohydrates for energy, Zarabi says. “But keep in mind that if you’re trying to regulate your blood glucose, have diabetes, or trying to lose weight, you’re probably better off with water for hydration,” she says. Think about how many oranges you need to squeeze to get a full cup of juice. It may be best to stick with water and add a spritz of fresh fruit juice for flavor.

Con: Juice can be sneakily calorie-dense

Juice contains fructose, and while this is a natural source of sugar and carbs, drinking too much of it may lead you to consume too many calories. For example, juicing 5 fruits can add up to 500 calories and more than 100 grams of sugar, says Zarabi. Women should consume only about 1,500 to 2,000 calories per day, while men can consume up to 2,500. But these numbers can vary based on your height, age, and activity level, she says.

“For those looking to lose weight or who have fatty liver disease, you may want to think twice about drinking your calories,” Zarabi says. All the fiber from the fruit has been removed during the juicing process. Yet it’s the fiber that can keep you full. Without it, you can drink all the juice you want and never really feel satiated, Zarabi explains.

Popping a fiber supplement might seem like an easy fix, but it isn’t. “A fiber supplement is not a replacement for natural sources of fiber that derive from the indigestible parts of the plant,” Zarabi says. “The thick skins of fruits and vegetables are crucial to sweep out the debris and toxins in our body.”

The pros and cons of juicing (1)

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Juice fasting: Is it good or bad?

You may have friends who’ve gone on a juice fast, a type of fad diet that involves only drinking fruit and veggie juice instead of eating solid food for a stretch. But like any type of fasting, juice fasts can leave you hungry, Zarabi says. And they’re not as healthy as you might think.

“The sugar only increases your appetite, and the lack of fiber keeps your belly asking for more,” says Zarabi. “There is no protein or healthy fats in juice, so when juicing you have to keep in mind that they aren’t filling calories.”

Assorted detoxification diets (called “cleanses” or “detoxes”) have been promoted as ways to lose weight or remove toxins from the body, but in fact, some of the juices used in detoxes and cleanses haven’t been pasteurized or treated to kill harmful bacteria that can make people sick.

This can be especially harmful to older adults, children, and people with weakened immune systems. If you drink too much juice with spinach and beets in it, for example, the high levels of oxalate, a naturally occurring substance, could increase your risk for kidney problems such as kidney stones. The stones can form because your body has too much oxalate in it, and it doesn’t absorb calcium properly.

Also, detoxes and cleanses can be dangerous if you have diabetes. These fad diets can be full of sugar, and unbalanced blood sugar levels can present serious health concerns to diabetics. Always consult your doctor before changing your diet, especially if you have a chronic condition such as diabetes.

Juices vs. smoothies: Which one is better?

You may have seen juice bars open in your area — and many of them offer both juices and smoothies. What’s the difference between the two? Is one better for you than the other? The main difference is that smoothies include the whole food along with the fiber, which is ultimately removed from juices, says Weisenberger.

Leaving in that veggie and fruit pulp can be a better nutritional strategy than juicing, suggests Zarabi. “You’re breaking up the whole plant into smaller particles, rather than extracting the fiber, which we need for better health,” she says. “Also, you have the opportunity to add nuts and seeds to this blend, and these contain more phytochemicals, omega-3s, and protein. Now that’s a superfood.”

If you’re watching your weight, though, know that some smoothies can be high in calories. So it’s a good idea to keep tabs on what you’re putting in your smoothie too.

Getting enough fiber also helps maintain bowel health, normalize bowel movements, and keeps you at a healthy weight. It may also help decrease your risk of dying from certain types of cancer and cardiovascular disease.

If you choose to juice, select darker-colored vegetables, Zarabi says. “The darker the vegetable, the more antioxidants and phytochemicals it has. Think kale, arugula, and spinach over iceberg lettuce and cucumbers,” she says. “And choose dark-colored berries for a touch of sweet.”

Like those sneakily high-calorie smoothies, make sure you’re aware of how much sugar there is in your juice. Dark-colored berries like blackberries and raspberries are low in sugar but high in taste. In other words, when it comes to the healthiest juices, the less sugar, the better.

Bottom line: For many people, juicing can be a healthy option in moderation. But always consult your doctor first before making any drastic changes to your diet, especially if you have diabetes or other chronic illnesses.

A great way to ensure that you have a doctor to consult? Have a health insurance plan. Call a licensed insurance agent at 1-800-273-8115 or find more information by exploring uhone.com.

The advertisem*nt is provided as general information only. It is not intended to diagnose or recommend treatment of any illness, disease or condition. You should consult a qualified medical professional if you have questions or need more information.

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Sources:

Harvard Health Publishing Harvard Medical School. “The pros and cons of root vegetables.” February 15, 2021. Retrieved from https://www.health.harvard.edu/staying-healthy/the-pros-and-cons-of-root-vegetables

Harvard Health Publishing Harvard Medical School. “Should I be eating more fiber?” February 27, 2019. Retrieved from https://www.health.harvard.edu/blog/should-i-be-eating-more-fiber-2019022115927

Harvard T.H. Chan School of Public Health. “Apples.” Retrieved from https://www.hsph.harvard.edu/nutritionsource/food-features/apples/. Accessed May 9, 2022.

Mayo Clinic. “Dietary fiber: Essential for a healthy diet.” Retrieved from https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/in-depth/fiber/art-20043983#:~:text=Unlike%20other%20food%20components%2C%20such,and%20out%20of%20your%20body. Accessed May 10, 2022.

National Center for Complementary and Integrative Health. “‘Detoxes’ and ‘Cleanses’: What You Need To Know.” September 2019. Retrieved from https://www.nccih.nih.gov/health/detoxes-and-cleanses-what-you-need-to-know

National Institutes of Health. National Library of Medicine. Gastroenterology Research and Practice. “Ginger and Its Constituents: Role in Prevention and Treatment of Gastrointestinal Cancer.” March 8, 2015. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4369959/

National Institutes of Health. “Vitamin A and Carotenoids.” March 23, 2022. Retrieved from https://ods.od.nih.gov/factsheets/VitaminA-HealthProfessional/

Oregon State University. “Vitamin A and Skin Health.” Retrieved from https://lpi.oregonstate.edu/mic/health-disease/skin-health/vitamin-A. Accessed May 10, 2022.

Stanford Medicine. “Nutrition Services for Cancer Patients.” Retrieved from https://stanfordhealthcare.org/medical-clinics/cancer-nutrition-services/reducing-cancer-risk/phytochemicals.html Accessed January 1, 2023.

Tufts University. September 17, 2019. Retrieved from https://www.nutritionletter.tufts.edu/gi-health/q-should-i-avoid-eating-spinach-because-it-has-oxalate-found-in-kidney-stones-i-already-have-some-kidney-stones/

WebMD. “Health Benefits of Celery.” August 21, 2022. Retrieved from https://www.webmd.com/diet/health-benefits-celery

The pros and cons of juicing (2024)

FAQs

Can juicing have negative effects? ›

More extreme juice cleanses are associated with negative side effects, including diarrhea, nausea, dizziness, and fatigue. There is no evidence that juice cleanses are necessary for detoxifying the body. Also, juicing may harm people who have kidney problems or take certain medications.

Are there any real benefits to juicing? ›

Juicing can play a role in a balanced diet. For instance, it can help you get fruits and vegetables if you don't enjoy eating them. Juicing also can give the digestive system a rest from digesting fiber. This may help some people who have certain health conditions or who receive certain medical treatments.

What are the positive effects of juicing? ›

Fresh juices are packed with soluble fiber, a type of fiber that supports good bacteria growth and digestive health. It has been shown to regulate blood sugar levels, lower cholesterol, and slow the transit of food through the digestive tract.

What happens to your body when you start juicing? ›

As you drink your juice, a supply of vitamins, minerals and natural sugar will flood your system and boost your energy levels as a result. Though this natural sugar-high only lasts for a limited time, and can often be followed by feelings of sluggishness and headaches.

Is juicing hard on the liver? ›

Philips says there is no harm in having an occasional fruit or vegetable juice, but he wants to warn people — healthy ones and those with chronic liver disease, kidney disease or diabetes — about juicing vegetables and fruits together “in an irrational manner.”

Is juicing bad for gut health? ›

In a Nutshell. In conclusion, cold-press juicing is an excellent way to improve gut health and reduce inflammation. It's a simple and delicious way to get more fiber and nutrients into your diet.

What vegetables should not be juiced? ›

Vegetables That Should Not Be Juiced Everyday

Spinach contains oxalates and raw kale contains goitrogens. Oxalates are also found in bananas, mangoes, cauliflower, and more. Goitrogens are found in raw cruciferous vegetables and can affect thyroid function in large amounts.

What is the healthiest juice to drink? ›

5 of the healthiest juices
  1. Açaí berry. While research is limited, Açaí juice has been found to offer some benefits. ...
  2. Beet. Also called beetroot juice, beet juice contains a significant amount of nitrates that help to improve blood flow, according to WebMD. ...
  3. Cranberry. ...
  4. Grapefruit. ...
  5. Tomato.
Apr 12, 2024

Does juicing shrink your stomach? ›

Although juicing doesn't actually shrink the stomach, it does temporarily eliminate the possibility to eat for comfort. The upshot of that is that you will feel satiated with less food than usual, immediately after you're done with the cleanse.

Can you live on juicing only? ›

Many juice-based diets last less than 2 weeks. However, some programs may last longer. However, regardless of length, juice diets are dangerous, and a person should only consume a liquid-only diet under medical supervision.

What is the downside of juicing? ›

That being said, unless you like extra-heavy pulp, most-if-not-all juices will contain very little amounts of fiber. Removing fiber from your diet can lead to digestive issues like diarrhea, and low fiber diets are known to lead to increased risk of developing colon and other cancers.

What are the side effects of juicing? ›

The low calorie content of most juices can elicit fatigue, headaches, cravings and dizziness. It may lead to muscle and bone loss. Because juice contains limited amount of protein, your muscles and bones can be affected.

How long does it take to see the benefits of juicing? ›

4-7 Days. If you're looking to achieve some serious weight loss, a longer cleanse is best for you. You won't see any significant results if you cleanse for too short a time. Fruits and vegetables are low in calories and high in nutrients, which is why drinking juice for several days has a weight reducing effect.

What are the disadvantages of juicers? ›

Disadvantages:
  • device difficult to clean.
  • the juice is runny, watery and less healthy than that of an extruder.
  • no juice can be squeezed out of herbs or leafy vegetables (e.g. spinach) as well as small fruit.
  • the juice is very aerated and foamy, so it is quickly oxidized.

What are the disadvantages of a juice diet? ›

Cons of juice fasting

Pureed juice drinks contain a lot of sugar, in the form of glucose, and lack fiber. This leads to many individuals feeling hungrier than usual, as their blood sugar levels spike and then drop. This, in turn, can lead to weight gain.

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