Can You Gain Weight from Drinking Water? Debunking the Myth and Exploring the Truth


It’s a common myth that drinking water can make you gain weight. The idea seems counterintuitive: water has no calories, so why would it make you gain weight? In this article, we’ll explore the truth about this myth and discuss the relationship between water intake and weight. We’ll debunk the myth, discuss the role of water in weight loss, and offer tips for staying hydrated and maintaining a healthy weight.

Debunking the Myth: Can Drinking Water Actually Make You Gain Weight?

The myth that drinking water can make you gain weight has been around for years. The idea originated from the belief that consuming large amounts of water could cause you to retain water weight, leading to bloating and weight gain. However, this belief is not backed by scientific evidence.

According to the American Council on Exercise, there is no evidence to support the notion that drinking water can make you gain weight. In fact, drinking water can help regulate your body’s water balance and prevent water retention. Furthermore, drinking water before meals can help reduce calorie intake and aid in weight loss. Refuting the myth is important because it can prevent people from staying hydrated, which is essential for overall health.

Does Water Really Contribute to Weight Gain? Here’s What Science Says

While water does not directly cause weight gain, there may be a link between water intake and weight. Multiple studies have found that individuals who drink more water tend to have lower body weight and lower body mass index (BMI). However, the reasons for this relationship are not entirely clear.

One potential explanation is that water intake may reduce calorie intake. Drinking water before meals can help you feel fuller faster, which can lead to consuming fewer calories overall. Additionally, staying hydrated may help boost metabolism and increase calorie expenditure.

However, it’s important to note that while water intake may be associated with lower body weight, this does not necessarily mean that drinking more water will cause weight loss. Other factors, such as diet and exercise, play a significant role in weight management.

The Truth About Staying Hydrated and Weight Loss

Staying hydrated has many benefits for overall health, including aiding in weight loss. When the body is dehydrated, it can slow down metabolism and reduce calorie expenditure. Additionally, dehydration can lead to fatigue and decreased physical performance, making it harder to exercise and burn calories.

To stay hydrated and aid in weight loss, it’s recommended to drink at least 8-10 glasses of water per day. However, individual water needs may vary depending on factors such as activity level and climate. Other sources of hydration, such as herbal tea and fruit-infused water, can also contribute to daily water intake.

The Surprising Connection Between Water and Weight Gain

While drinking water itself does not cause weight gain, dehydration can actually lead to weight gain. When the body is dehydrated, it can increase the production of cortisol, a stress hormone that can cause the body to retain water and lead to bloating and weight gain. Additionally, dehydration can cause a decrease in blood volume, resulting in decreased exercise performance and calorie expenditure.

Furthermore, water retention can also lead to weight gain. Sodium intake is a key factor in water retention, as the body needs to maintain a balance of sodium and potassium to regulate fluid levels. Consuming excessive amounts of sodium can cause water retention and lead to bloating and weight gain. To prevent water retention, it’s important to limit sodium intake and consume potassium-rich foods, such as bananas and avocados.

Is Too Much Water Hindering Your Weight Loss Efforts?

While staying hydrated is important for overall health, there is such a thing as drinking too much water. Excessive water intake can lead to hyponatremia, a condition where the body’s sodium levels become diluted and can cause symptoms such as headache, nausea, and seizures.

Furthermore, excessive water intake can actually hinder weight loss efforts. Drinking large amounts of water can cause the stomach to stretch, leading to feelings of fullness and reduced appetite. While this may seem like a positive effect for weight loss, it can also lead to consuming fewer calories overall, which can slow down metabolism and make it harder to lose weight.

The Role of Water in a Balanced Diet and Weight Management

Water is an essential part of a balanced diet and plays a key role in weight management. Drinking water can help regulate appetite, increase metabolism, and aid in digestion. Additionally, water can replace sugar-sweetened beverages, which are a major source of empty calories and can contribute to weight gain.

To incorporate water into a healthy diet, try carrying a water bottle with you throughout the day and aim to drink a glass of water before meals. Additionally, replacing sugary beverages with water or herbal tea can significantly decrease calorie intake.

Water vs. Sugary Drinks: Which One Can Make You Gain Weight?

One key factor in weight management is beverage choice. Sugary drinks, such as soda and fruit juice, are a significant source of empty calories and can contribute to weight gain. In fact, one 20-ounce soda can contain up to 250 calories and 70 grams of sugar.

On the other hand, water contains no calories and can aid in weight loss. Replacing sugary drinks with water can significantly decrease calorie intake and help you maintain a healthy weight. If you’re looking for a flavorful alternative to water, try infusing it with fresh fruit or herbs.


While the myth that drinking water can make you gain weight is not supported by scientific evidence, there is a complex relationship between water intake and weight management. Staying hydrated can aid in weight loss and overall health, while dehydration and excessive water intake can hinder weight loss efforts. Choosing water over sugary drinks can significantly decrease calorie intake and aid in weight management. By staying hydrated and making wise beverage choices, you can maintain a healthy weight and promote overall wellness.

Webben Editor

Hello! I'm Webben, your guide to intriguing insights about our diverse world. I strive to share knowledge, ignite curiosity, and promote understanding across various fields. Join me on this enlightening journey as we explore and grow together.

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