葡萄汁對健康有好處嗎?

Grapes have been part of the human diet for centuries. They are easy to grow and ideal for winemaking. The fruit can also be dried and preserved as raisins.

Grape juice is made from the whole grape, including the skins, pulp and seeds. It contains most of the vitamins and minerals found in table grapes, as well as the health benefits of the nutrient-rich seeds.

The most common grape juice is purple and made from Concord grapes. You can also find white grape juice made from Niagara grapes. Both grapes are native to the United States.

Eating whole grapes is also a good option. Fresh fruit provides fiber and extra vitamins.

Nutritional information

A ½ cup serving of unsweetened grape juice contains:

  • Calories: 76
  • Protein: 0.5g
  • Fat: 0g
  • Carbohydrates: 19 grams
  • Fiber: 0 g
  • Sugar: 18 grams

Grape juice provides:

  • Vitamin C
  • calcium
  • magnesium
  • phosphorus
  • Potassium

Grape-flavored drinks may contain more added sugar and water than juice, providing you with a lot of calories but few vitamins and minerals. Look for "100% juice" on the label to get all the health benefits of grape juice without added sugar.

Potential health benefits of grape juice

Like the fruit it is made from, grape juice is a fat-free, cholesterol-free source of vitamins and minerals. It is also a low sodium drink.

Here are some benefits of drinking grape juice:

Reduce risk of disease

Grape juice contains high levels of antioxidants, which can help protect the body from free radicals. Free radicals are harmful substances, such as chemicals in contaminated or processed foods. The damage they cause to cells can lead to the development of heart disease, cancer and other diseases. Antioxidants may help prevent or even reverse this damage.

Juice made from Concord or purple grapes may be better at reducing disease risk. Concord and purple grapes naturally have higher antioxidant activity than other fruit varieties.

Improve heart health

Early research suggests that red and purple grape juice may promote cardiovascular health in the same way as red wine. Similar benefits of red wine and grape juice include protecting blood vessels, reducing the risk of blood clots, and maintaining healthy blood pressure and cholesterol levels.

Lower blood pressure

The potassium in grape juice can help the body excrete excess sodium, which is beneficial for patients with high blood pressure. Potassium also lowers blood pressure by relaxing blood vessel walls.

Prevent urinary tract infections

You may have heard that cranberry juice can help fight bacteria that cause urinary tract infections. Early research suggests that black grape juice may have the same effect.

Potential risks of grape juice

Grape juice has many health benefits but is high in natural sugar and calories. Some people may need to be extra careful with their drinks and drink them in moderation.

high blood sugar

Grape juice contains natural sugars, rather than the artificial sweeteners or refined sugars found in soda. However, one cup of grape juice contains 36 grams of sugar and almost no fiber, so it may cause blood sugar to spike.

If you have diabetes or need to watch your blood sugar for any reason, ask your doctor if you need to avoid or reduce your usual juice intake. Whole grapes may be a better choice because they contain fiber and are less likely to cause blood sugar spikes.

weight gain

Grape juice can be a healthy alternative when trying to kick a soda habit. However, it's easy to overdose on high-calorie drinks like juice, so consider portion size when pouring a glass. The Dietary Guidelines for Americans recommend limiting juice to half a cup per day.

Review

All comments are moderated before being published

HealthyPIG Magazine

View all
牛骨湯食譜大全|Instant Pot 壓力煲 & 傳統老火湯版本

牛骨湯食譜大全|Instant Pot 壓力煲 & 傳統老火湯版本

牛骨湯食譜係香港家庭常見嘅煲湯之一,牛骨湯香濃滋補,配合中藥材更具養生功效。本文介紹肉骨類選擇、牛骨湯建議配搭、常見中藥材分類,以及Instant Pot壓力煲與傳統老火湯版本食譜,並引用科學研究支持。
澳洲飲用水發現「食腦變形蟲」:全球風險與地區對策(含各國/各州實用指南)

澳洲飲用水發現「食腦變形蟲」:全球風險與地區對策(含各國/各州實用指南)

澳洲飲用水發現「食腦變形蟲」:全球風險與地區對策(含各國/各州實用指南) 澳洲飲用水發現「食腦變形蟲」:全球風險與地區對策(含各國/各州實用指南) 重點:事件本身不代表飲水會感染;主要風險來自水經鼻腔進入。 目錄 ...
如何判斷雞翅是否變壞?

如何判斷雞翅是否變壞?

重點摘要 雞翅會變質嗎? 如何判斷雞翅是否變壞? 過期雞翅還能食嗎? 雞翅可存放多久? 如何儲存雞翅? 雞翅可以冷凍嗎? 結論 雞翅會變質嗎? 會。皮脂較多、表面不潔或溫度過高時,細菌繁殖更快。 如何判斷雞翅是否變壞? 外觀:皮色發黃、出黑斑或血水。 觸感:表面黏滑、軟爛。 氣...
如何判斷雞蛋是否變壞?

如何判斷雞蛋是否變壞?

重點摘要 雞蛋會變質嗎? 如何判斷雞蛋是否變壞? 過期雞蛋還能食嗎? 雞蛋可存放多久? 如何儲存雞蛋? 雞蛋可以冷凍嗎? 結論 雞蛋會變質嗎? 會。殼面有微孔,溫差及濕度變化會令細菌入侵。 如何判斷雞蛋是否變壞? 水測:沉底=較新鮮;浮起=多半變壞。 打開觀察:蛋白渾濁水樣、蛋黃...
如何判斷羊肉是否變壞?

如何判斷羊肉是否變壞?

重點摘要 羊肉會變質嗎? 如何判斷羊肉是否變壞? 過期羊肉還能食嗎? 羊肉可存放多久? 如何儲存羊肉? 羊肉可以冷凍嗎? 結論 羊肉會變質嗎? 會。脂肪多而易氧化,處理或存放唔好就會變壞。 如何判斷羊肉是否變壞? 顏色:紅轉黑,或出現綠斑。 脂肪:由白轉黃兼有酸味。 氣味:由輕...
如何判斷豬肉是否變壞?

如何判斷豬肉是否變壞?

重點摘要 豬肉會變質嗎? 如何判斷豬肉是否變壞? 過期豬肉還能食嗎? 豬肉可存放多久? 如何儲存豬肉? 豬肉可以冷凍嗎? 結論 豬肉會變質嗎? 會。豬肉表面水活度高,加上處理不潔或溫度過高,容易腐敗。 如何判斷豬肉是否變壞? 顏色:粉紅轉灰、發綠或出斑。 氣味:酸臭、腥臭味濃 ...
如何判斷牛肉是否變壞?

如何判斷牛肉是否變壞?

重點摘要 牛肉會變質嗎? 如何判斷牛肉是否變壞? 過期牛肉還能食嗎? 牛肉可存放多久? 如何儲存牛肉? 牛肉可以冷凍嗎? 結論 牛肉會變質嗎? 會。牛肉含高蛋白同水分,若溫度控制或衛生不當,細菌會快速繁殖,導致變壞。 如何判斷牛肉是否變壞? 顏色:鮮紅轉深褐甚至發黑;脂肪變黃。 ...
成年後懷疑自己有注意力不足過動症(ADHD),應該接受診斷嗎?

成年後懷疑自己有注意力不足過動症(ADHD),應該接受診斷嗎?

在過去,注意力不足過動症(Attention-Deficit/Hyperactivity Disorder, ADHD)多被視為「小孩的病」,很多成年人小時候從未被評估或診斷。直到近年社會對心理健康重視度提升,許多成人才開始懷疑,自己長期以來的專注困難、健忘、衝動或時間管理不良,可能與 ADHD 有關。這種「晚發現」的情況相當普遍,也引發了問題:成年後是否值得接受 ADHD 診斷?

哪些職業對健康影響最大?科學與現實的分析

哪些職業對健康影響最大?科學與現實的分析

在現代社會中,工作佔據了人們生命中相當大的一部分。然而,不同職業對健康的風險並不相同。一些工作性質或環境,會顯著增加慢性病、心理壓力、甚至縮短壽命的風險。以下從科學研究與醫學角度,探討幾類對健康損害較大的職業,並附上相關統計數據。