Tim Börner is a dedicated intermittent fasting advocate and user engagement specialist with a deep passion for promoting a healthy and balanced lifestyle. Based in Germany, Tim has been an integral part of the Fastic team for several years, where he combines his expertise in user engagement with his personal commitment to intermittent fasting. His approach is rooted in the belief that a harmonious blend of disciplined eating habits and mindful living is key to overall well-being.
To maximize the benefits of intermittent fasting it is paramount to maintain a well-balanced diet. Despite dietary restrictions during fasting, you must ensure nutrient balance without compromising the fast. Given that nutrients are vital nutrients for optimal body functioning, the question arises: Can you take electrolytes while fasting?
Before embarking on your fasting journey with Fastic, let’s explore the role of electrolytes in the world of intermittent fasting.
Yes, electrolytes are necessary while fasting. During a fast, the body’s hormone levels change, causing the body to produce ketone bodies (acidic compounds formed during the breakdown of fatty acids). This leads the kidneys to excrete more urine than usual so the body can adapt to metabolic changes, maintain pH balance, and prevent acidosis. The body needs to replenish lost electrolytes to prevent an electrolyte imbalance which can cause muscle cramps, fatigue, and headaches.
Electrolytes don’t break a fast. You can take electrolyte drinks while fasting only if they don’t contain sugar or calories. Electrolyte drinks with no sugar or calories won’t interfere with the body’s fasting state.
Our body needs electrolytes when fasting because they support muscle and nerve activity, and ensure physiological processes operate properly. The human body consists of 60% water meaning that electrolytes are present in almost every cell and fluid. When we ingest electrolytes they dissolve in water or into bodily fluids. Once inside, they travel throughout the body to assist in crucial processes such as:
Preserving healthy teeth and bones
Keeping blood pressure stable
Removing waste out of cells
Balancing the body’s pH levels
Keeping heart rate steady
Moving nutrients into cells
Maintaining water levels balanced
There are no best electrolytes to take during fasting. All electrolytes are necessary and relevant for adequate body performance because they all play different roles in the body.
The following are the main electrolytes in the body:
Calcium
Sodium
Potassium
Magnesium
Phosphate
Chloride
Bicarbonate
Electrolytes are found in diverse forms and concentrations all over the body. Therefore, sustaining balanced electrolyte levels is fundamental for optimal well-being.
Staying hydrated during a fast is a must. Limiting meals and portions during fasting leads to a lack of electrolyte intake, so drinking plenty of water and electrolytes is necessary to make up for the nutrients you aren’t getting from a regular diet and eating schedule.
The exact amount of electrolytes and water a person should ingest during fasting varies due to factors like health background, daily routine, diet, exercise, etc. It is recommended to drink more liquids than usual, 2-3 liters daily.
Electrolytes are lost through urine and sweat, emphasizing the importance of maintaining proper levels while fasting. You can sustain proper electrolyte levels by drinking calorie and sugar-free electrolyte beverages. Follow a varied diet and aim for foods and drinks with high and varied concentrations of electrolytes.
Let’s look at some drinks and foods high in electrolytes that you can incorporate into your fasting diet. Whether it's a fast with a short eating window, like the 20:4 fast, or one with a longer eating window, such as the 14:10 fast, determining which types of fasting-friendly electrolyte drinks won’t interrupt your fast is key.
Electrolyte drinks can only be consumed during eating windows since they may contain calories.
Coconut water
Sports drinks
Branded electrolyte-enhanced drinks
Herbal teas like hibiscus
Fruit-infused water offers natural electrolytes from fruits
On the other hand, zero-calorie electrolyte drinks are suitable for consumption during fasting hours due to their null calorie content, meaning they won’t initiate any metabolic responses.
Unsweetened coconut water
Plain herbal teas (without added sugars or sweeteners)
Branded unsweetened-enhanced water
If you are feeling creative and want to do your own electrolyte drink from scratch, here are a few recipes you can try.
Sports electrolyte drink: 1 liter of water, a teaspoon of honey, a pinch of salt (salt doesn’t break a fast), and orange or lemon juice (add as much as you like).
Lemon water with electrolytes: 1 liter of water, 6 teaspoons of sugar, and ½ tablespoon of salt. Add lemon or lime juice for a nice kick.
Cucumber-infused water: 1 liter of water, cut cucumber slices and add to water. Let them sit overnight in the fridge (oranges and strawberries are good flavor options).
All foods contain some amount of electrolytes. The following foods are high in electrolytes and provide the essential nutrients the body needs.
Leafy greens (kale and spinach are high in magnesium and potassium)
Nuts and seeds (magnesium)
Avocado (potassium)
Yogurt or kefir (calcium and potassium)
Bananas (potassium)
Track your electrolyte consumption effortlessly with the Fastic app and guarantee your electrolyte levels always stay optimal.
Another option to sustain a healthy electrolyte balance is to take electrolyte supplements or electrolyte powder. There isn’t a single best electrolyte supplement for fasting, however, supplements that contain magnesium, potassium, and calcium help support bodily functions during fasting. Aim for supplements that don’t have any added sugars or calories.
How can you monitor electrolyte levels during fasting? You don’t need to undergo expensive weekly blood tests. You can determine your body’s electrolyte levels simply by paying close attention to your body and any possible symptoms like fatigue, dizziness, irregular heartbeat, or muscle cramps.
If you want to really keep your levels healthy and prevent any harm, opt for periodic blood tests. If you believe you are experiencing electrolyte imbalance symptoms consult with a healthcare professional to better assess your symptoms and particular health condition.
The speed at which electrolyte beverages work will depend on various variables, and it could occur within minutes to a couple of hours.
Factors that influence individual response time are:
hydration status at the moment of drinking
individual metabolism (taking into consideration metabolic changes due to fasting)
specific electrolyte composition of the electrolyte drink
Consuming electrolyte beverages throughout the day is the best way to guarantee your body is good to go at all times.
Key times to drink electrolytes while intermittent fasting:
after waking up in the morning to restore lost electrolytes during sleep
during fasting hours (go for zero-calorie electrolyte beverages for an extra boost)
when experiencing symptoms like dizziness, fatigue, and muscle cramps
before or after (or both) physical activity to replenish lost electrolytes from sweat
right before going to bed to support bodily functions during sleep
Do not overdo it, drinking only electrolyte drinks every day can be counterproductive.
Overdoing it with electrolyte consumption can lead to health risks such as hyponatremia and hyperkalemia. Excess of electrolytes can lead to symptoms like headaches, nausea, and muscle weakness. Always listen to your body’s signals. Download the Fastic app to monitor your liquid intake and ensure you don’t surpass your electrolyte levels.
Disclaimer: It is advised to speak with a health professional before beginning intermittent fasting or a diet program. There may be side effects for people with certain medical conditions.
With Fastic, millions of people have achieved their desired weight, overcome disease and regained their quality of life.
Take the Quiz