![What Are the Benefits (and Dangers) of Water Fasting?](https://images.medicinenet.com/images/article/main_image/woman-drinking-water-husband-hydration-thirsty-nutrition-health.jpg?output-quality=75)
Water-only fasting is an extreme form of fast, where you cannot take any food other than water. This intervention is often touted as a zero-caloriedietconsisting of a person having nothing but two to three liters of water per day for about seven days.Most health practitioners advise against water fasting.
Firstly, the evidence on the benefits of this practice is limited and not high in quality. Secondly, studies suggest that those with comorbidities, such asdiabetes,hypertension, kidney problems,heartproblems, elderly,pregnant, andbreastfeeding, were excluded from the trials over safety concerns.
So, if you have any existing health issues oreating disorders,any type of unsupervised fasting is not meant for you.
10 purported benefits of water fasting
Fasting is prevalent since the Middle Ages for religious and health reasons.Water fasting is promoted for its “so-called benefits” that include:
- Modulation of hormonal balance in the body, particularly reducing levels ofinsulinandcorticosteroids.
- Recalibrate your brain centers that control hunger and appetite. Thus, it is believed to improve your eating behavior so that you tend to binge less and have better satiety.
- Reduced inflammatory protein levels in the blood (e.g.,C-reactive protein, substance P) may improve cellular functioning and lower the risk of chronic health conditions.
- Reduced insulin levels and improved insulin sensitivity and fat burning.
- Claims regarding protection fromcancerand other chronic diseases.
- Ketosis develops in the first three days of fasting as a metabolic consequence offatsbeing burnt for energy instead of glucose. A mild state of ketosis is believed to have neuroprotective effects by reduced free radical production.
- Ketosis results in improved fat burning and improved basal metabolic rate, causing rapidweight loss.
- A reduction in about 10 percent body weight is associated with improved joint and spine function, reducedstressover the heart, improved glucose levels in those withprediabetes, and reducedblood pressurevalues.
- Reducedcholesteroland triglyceride values in the blood, reducing the risk of blood vessel diseases anddementia.
- Studies concur that any type of fasting can improve the gut microbe number and diversity. Fasting causes an increased level of the beneficial short-chain fatty acid formation in the gut, which may help with intestinal immunity and provide relief in certain autoimmune diseases.
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QUESTION
Weight loss occurs in the belly before anywhere else.See Answer10 dangers of water fasting
You must be aware of the possible adverse effects caused by water fasting.Prolonged fasting is a dangerous practice. You must understand that calorie restriction must be coupled with physical activity and weight training for healthyweight loss.
Water fasting has many side effects, which include:
- Fatigue,dizziness, andnauseadue to low blood sugars.
- Over the next seven days, you may experienceconstipation,dehydration, and not being able to toleratecoldtemperatures.
- Increased uric acid andcreatinineblood concentrations (probably secondary to muscle breakdown) during fasting, affecting kidneys in long run and causingkidney stones.
- Constant water fasting (or any faddiet) increases the chances of gall bladder inflammation andgallstones.
- Decreased kidney function due to possibledehydrationif water fasting is done in a hot environment.
- Long-term ketosis (over weeks) can lead to metabolic acidosis in the body that can negatively affect the body cells in general and heart cells.
- Chronic water fasting can trigger calcium release from bones, causing bone loss and a tendency tofracture.
- Electrolyteimbalances due to low water consumption and the absence of nutrients can lead to a significant loss of sodium, magnesium, and potassium from the body and may trigger dangerous arrhythmias in the heart. They may affect brain andliverhealth.
- The more you fast, the body starts interpreting it asstressand lowers your metabolism, causing you to gain weight, getmigraines, feel sluggish, and getmood swings.
- Water fasting may trigger bingeing behavior in those predisposed to eating disorders.
Is fasting safe?
Intermittent fasting for about 16 hours a day is mostly safe and even beneficial for the body if you drink enough water and make sure yourelectrolytesare in order.
- Fasting triggers the phenomenon of “autophagy” in the body cells.
- 自噬是简单的过程body destroys certain cellular components that areagingor getting damaged over time.
- Such damaged organelles are potential for cell inflammation,aging, orcancer.
Scientists believe that autophagy is a natural anticancer mechanism that limits necrosis and inflammation and prevents cells with defective components or DNA from replicating.
Fasting when done under professional supervision and with adequate precautions may help you live longer and healthier.Which form of fasting is the best?
Depending on your comorbidities, age, and lifestyle, the doctor could suggest a fast that will work for you. Several studies report the promise of intermittent fasting. However, these studies are done only for months. It is unclear if the benefits will remain for years if the diet is continued throughout life.
Watson S. Do Fasting Diets Work? WebMD. https://www.webmd.com/diet/fasting
Oglodek E, Pilis Prof W. Is Water-Only Fasting Safe? Glob Adv Health Med. 2021;10:21649561211031178. https://journals.sagepub.com/doi/pdf/10.1177/21649561211031178
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