Medical experts from the Cleveland Clinic have identified several lifestyle and environmental factors that frequently lead to dehydration [1].

Maintaining proper hydration is critical because the human body is composed of approximately 60 percent water [4]. When water balance drops, it can impair physical and cognitive functions, making it essential to recognize the subtle causes of fluid loss.

Dehydration occurs when factors either increase the amount of fluid the body loses or reduce the total amount of fluid intake [3, 5]. According to the experts, common triggers include illness and alcohol consumption [1]. Other contributing factors include the intake of excessive added sugar, and the environmental conditions associated with airplane travel [1, 2].

Even minor shifts in fluid levels can impact the body. Losing as little as 1.5 percent of body water can result in mild dehydration [4]. This state often manifests through various symptoms that can be reversed quickly through proper intake.

Medical experts said that symptoms may improve within five to 10 minutes after drinking a glass of water [1]. This rapid response underscores the importance of consistent fluid monitoring, especially during travel or illness when the body is more susceptible to water loss.

While many people associate dehydration only with extreme heat or exercise, the Cleveland Clinic notes that daily habits and specific environments play a significant role. Factors like high sugar intake can disrupt the body's internal balance, leading to a need for increased water consumption to compensate.

The human body is about 60 percent water.

This guidance emphasizes that dehydration is not always the result of obvious environmental heat, but can be triggered by dietary choices and common activities like flying. By identifying 'sneaky' causes such as added sugar and alcohol, health providers aim to shift public focus toward preventative hydration throughout the day rather than reactive drinking.