Can you drink water with cucumber while fasting?

Fasting has become an increasingly popular way to improve health, lose weight, and simplify eating habits. During fasting periods, only certain beverages are allowed. One question that often comes up is whether you can drink water with cucumber while fasting.

In this article, we’ll take a comprehensive look at whether or not cucumber water is fasting-friendly. We’ll review the rules of fasting, examine the potential benefits and downsides of drinking cucumber water during a fast, and provide tips for preparing tasty cucumber infused water.

What is Fasting?

Fasting is the practice of voluntarily abstaining from some or all food and drink for a set period of time. Fasting is often done for health, religious, or spiritual reasons. Here are some of the most common types of fasting:

  • Water fast – Consuming only water and no food or other beverages
  • Juice fast – Consuming only fruit and vegetable juices
  • Intermittent fasting – Alternating between periods of fasting and normal eating
  • Time-restricted feeding – Limiting eating to set number of hours per day

No matter the fasting method, the goal is to give the digestive system a rest while still providing the body with essential vitamins, minerals, and hydration from select beverages.

Rules of Fasting

Fasting rules can vary depending on your goals and chosen fasting method. However, there are some basic guidelines to follow:

  • Only consume permitted beverages like water, black coffee/tea, broth, or juice
  • Avoid all foods, supplements, sweeteners, creamers, etc.
  • Stay hydrated by drinking plenty of water
  • Focus on rest and recovery activities
  • Avoid strenuous exercise

During a fast, the body enters into a metabolic state called ketosis. Consuming forbidden foods or beverages can disrupt ketosis and diminish the benefits of fasting. That’s why it’s important to strictly follow the rules of your chosen fasting protocol.

Can You Drink Cucumber Water While Fasting?

Now that we’ve reviewed some fasting basics, let’s discuss whether or not cucumber water is fasting-approved. Cucumbers are made up mostly of water. However, they do contain small amounts of carbohydrates and calories. The answer depends on a few factors:

  • Type of fast – For a pure water fast, plain water is recommended. For juice or modified fasts, unsweetened cucumber water may be permitted. Discuss with your healthcare provider.
  • Ingredients – Cucumber infused water must not contain any sweeteners, flavors, oils, etc. Just plain cucumber slices in water.
  • Frequency and portion size – Because cucumbers contain carbs and calories, limit portion sizes and frequency to avoid disrupting ketosis.

Overall, drinking small amounts of unsweetened cucumber water is unlikely to negatively impact most types of fasting. However, it’s best to consult with your doctor or dietitian to understand your specific nutritional needs and health goals.

Potential Benefits of Cucumber Water While Fasting

Drinking cucumber water during fasting periods may offer some potential benefits, including:

  • Hydration – Cucumber water can help meet increased fluid needs while fasting.
  • Nutrients – Cucumbers provide small amounts of vitamin K, magnesium, potassium and other nutrients.
  • Flavour and variety – Cucumber adds taste and texture, making water more appealing.
  • Supports digestion – Cucumber water may soothe the GI tract during fasting periods.
  • Detoxification – Cucumber has antioxidant and anti-inflammatory properties to gently cleanse the body.

Research also shows that cucumber contains compounds called cucurbitacins that may have beneficial effects:

Study Key Finding
Human trial in 2020 Cucumber extract improved antioxidant status and reduced inflammation in adults with high cholesterol.
Animal study in 2018 Mice fed cucumber extract had reductions in obesity, fatty liver disease, and insulin resistance.

While more research is needed, these findings suggest potential advantages to including limited amounts of cucumber while fasting.

Potential Downsides of Cucumber Water While Fasting

Despite some possible benefits, there are also some potential downsides to consider with drinking cucumber water during fasting periods:

  • May disrupt ketosis – Even small amounts of carbs and calories from cucumbers could inhibit ketosis.
  • Digestive issues – Raw cucumbers may worsen diarrhea, bloating, or gas for some people.
  • Allergies – Cucumbers belong to the same plant family as melons, bananas, and squashes. Allergies may occur.
  • Food associations – The taste of cucumbers may trigger hunger or desire to eat.
  • Artificial ingredients – Flavored waters could contain sugar, preservatives and other additives.

To minimize risks, opt for unsweetened cucumber water in small portions. Listen to your body’s response and avoid cucumbers if any digestive discomfort occurs.

Tips for Preparing Cucumber Water

If you’d like to give cucumber spa water a try during your fasts, here are some useful preparation tips:

  • Wash cucumbers thoroughly before slicing.
  • Slice cucumbers and add to a pitcher of water. Use 1-2 cucumbers per 2 quarts of water.
  • You can leave the skin on for additional fiber and nutrients.
  • Add cucumber slices to your water bottle so they infuse as you drink throughout the day.
  • Allow cucumber water to infuse in the refrigerator for 1-2 hours before drinking for best flavor.
  • Drink within 24 hours for optimal freshness.
  • Pair with mint, lemon, or other fasting-friendly herbs and fruits as desired.

Aim to drink cucumber water in moderation during fasting windows. Savor the light, refreshing flavor and stay well hydrated.


Hydration is a key consideration for any fasting regimen. While pure water is the gold standard, adding some cucumber to your water may provide additional benefits. Cucumber water offers a low-calorie, nutritious beverage option to help satisfy thirst and supply nutrients.

Most experts agree that unsweetened cucumber spa water made with minimal ingredients is unlikely to interfere with ketosis or break your fast. However, it’s smart to verify that cucumber water aligns with your specific fasting goals and diet plan.

As with any new food or beverage introduced during fasting, pay attention to your body’s signals. If you experience any adverse effects, avoid cucumbers and stick to plain water instead. When in doubt, check with a knowledgeable healthcare practitioner.

Staying properly hydrated is key to a successful fast. Infusing your water with refreshing cucumber slices can make your fasting water more enjoyable while providing some potential perks. Just be mindful of portion sizes and ingredients.

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