A girl drinking water from a tap. Credit: UNICEF Ghana
A girl drinking water from a tap. Credit: UNICEF Ghana

Ripple effect: How water consumption impacts body composition, weight

In the quest to achieve optimal health and fitness, many of us meticulously track our diet and exercise routines.


However, there is a vital element often overlooked: water consumption. Beyond quenching thirst, water plays a pivotal role in our overall well-being, including its significant impact on body composition and weight management. Let's delve into the depths of hydration and its effects on our bodies.

Link water, body composition

Water is not merely a beverage; it's the essence of life. Comprising about 60 per cent of the human body, water serves as a foundational component for various physiological processes.

From regulating temperature to aiding digestion and nutrient absorption, every system relies on adequate hydration to operate efficiently. Adequate hydration is vital for maintaining optimal body composition, which refers to the ratio of fat to lean mass in the body.

When the body is dehydrated, it can lead to a decrease in muscle mass and an increase in body fat percentage. This occurs because dehydration impairs protein synthesis, which is essential for muscle repair and growth.

Moreover, inadequate hydration can slow down the metabolism, making it harder to burn calories efficiently. On the other hand, staying well-hydrated supports muscle function and metabolism, helping to preserve lean muscle mass and promote fat loss.

Weight management: Water factor

For individuals striving to lose excess weight, water is a secret weapon often overlooked. Water acts as a natural appetite suppressant. Oftentimes, our bodies mistake thirst for hunger, leading us to consume calories unnecessarily when all that is really needed is a glass of water.

By staying hydrated, we can better distinguish between thirst and hunger cues and avoid eating indiscriminately. Drinking water before meals can also help prevent overeating by promoting satiety.

The tendency to overeat is, therefore, reduced and this in turn aids weight loss efforts. In fact, studies have shown that individuals who drink water before meals consume fewer calories and experience greater weight loss compared to those who do not.

Furthermore, staying hydrated supports proper kidney function, facilitating the elimination of waste and toxins, which can contribute to bloating and water retention. So, how much water should a person drink?

While individual needs vary depending on factors, such as age, weight, activity level and climate, a general recommendation is to aim for about eight to 10 glasses of water per day (that is, not less than two litres, which is equivalent to four sachets of water).

Disease state also affects the amount of water one should consume. For example, fluid restriction may be necessary in the treatment and management of some conditions such as heart failure, kidney failure, hyponatremia, liver cirrhosis, and some neurological conditions such as cerebral oedema.

It is, therefore, absolutely important to seek and follow the expert guidance of healthcare providers in such cases. 

Some popular questions

Is there a specific temperature of water that should be consumed? Which temperature of water when consumed will aid weight loss? Cold, warm or hot water?  Simply put, the scientific evidence concerning this is limited and inconclusive at this time. However this much is established: Drinking an adequate amount of clean and safe water is important for optimal health.

Is a ritual of consuming warm water mixed with lime juice early in the morning good for me? Can it help me lose weight? It will surely contribute to your Vitamin C intake. There is no magic or super food for weight loss. Also, beware that for some with gastroesophageal reflux disease (GERD), lemon juice may worsen the symptoms of heartburn.  

Tips for optimal hydration

• Sip throughout the day: Aim for consistent water intake rather than chugging large amounts at once.

• Infuse with flavour: If plain water seems dull, infuse it with fresh fruits, vegetables or herbs to enhance taste without added sugars or calories.

• Monitor hydration status: Pay attention to thirst signals and urine colour. Pale yellow urine typically indicates adequate hydration, while dark yellow may signify dehydration. Overly hydration is also bad.

• Hydrate before, during and after exercise: Sweating depletes fluid levels, so replenish with water before, during and after physical activity.

• Be Mindful of dehydrating factors: Limit intake of diuretic beverages like alcohol and caffeinated drinks, which can increase fluid loss.


In conclusion, water consumption plays a multifaceted role in body composition and weight. Water is not only essential for survival but also a cornerstone of optimal health. By prioritising adequate hydration, you can unlock a multitude of benefits, including those aforementioned and many more.

So go ahead, reach for a glass of water and experience the transformative effects of hydration on your journey to a healthier you.

The writer is a student,
Department of Nutrition & Dietetics, 
University of Ghana.
E-mail: [email protected]

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