The Hidden Side Effects Of Drinking Cold Water In Summer

As temperatures soar during the summer months, many people instinctively reach for a glass of ice-cold water to cool down.

While this may feel refreshing in the moment, health experts say drinking cold water—especially in excess—can lead to several unintended side effects.

Drinking cold water in summer might seem like a harmless habit, but according to nutritionists and medical professionals, it can sometimes disrupt normal bodily functions.

The body prefers fluids that are close to its internal temperature, and consistently drinking cold water can interfere with digestion, hydration, and even heart rate regulation.

Cold Water Can Hinder Digestion

One of the most widely reported side effects of consuming cold water is slowed digestion.

Health experts explain that cold temperatures can constrict blood vessels and solidify fats in the food we eat, making the digestive process more sluggish.

“Your stomach works best at a certain temperature. When you suddenly introduce ice-cold water, especially after meals, it can reduce the efficiency of digestive enzymes,” says Dr Anjali Mehta, a gastroenterologist based in New York.

May Trigger Sore Throat Or Cold Symptoms

In addition, experts note that excessive intake of cold water during hot weather can irritate the throat lining.

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This often leads to symptoms like a sore throat or, in some cases, respiratory discomfort.

According to Dr Mehta, “Cold water may lower your body’s natural defense mechanisms temporarily, making it easier for infections to take hold—especially if you’re going back and forth between air conditioning and the heat outdoors.”

Can Cause Headaches And Muscle Cramps

Drinking cold water too quickly, particularly after intense physical activity or exposure to heat, can also cause brain freeze or headaches.

Additionally, sudden temperature changes in the body may lead to muscle cramps or stomach spasms.

Fitness coaches often advise athletes to avoid icy drinks right after workouts, as it may shock the system and cause discomfort.

Might Affect Heart Rate

Surprisingly, studies suggest that consuming ice-cold beverages can sometimes stimulate the vagus nerve, a key component of the parasympathetic nervous system.

When overly stimulated, this nerve may cause a slight drop in heart rate, which can be risky for people with existing heart conditions.

So, What’s The Alternative?

Health experts recommend drinking cool or room-temperature water instead. It helps hydrate the body effectively without interfering with natural processes.

Sipping herbal-infused or lemon water is also a refreshing and safer option during the summer.

While cold water may provide temporary relief in the summer heat, regularly consuming it could come with a few health drawbacks.

Choosing the right water temperature not only helps the body stay balanced but also supports digestion and overall wellness. So, next time you’re thirsty, think twice before grabbing that ice-cold glass.