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What happens to your body when you drink hot coffee instead of iced coffee?

As the weather starts to cool down, many people tend to reach for hot coffee in the morning to warm them up from the inside instead of iced coffee. This can make a few small differences.

Báo Thanh niênBáo Thanh niên21/10/2025

The effects of coffee may be reduced.

The caffeine content of hot coffee and iced coffee is the same. However, many people find that iced coffee provides a stronger feeling of alertness.

This may be because hot coffee is drunk more slowly than iced coffee, which reduces the energy-boosting effect a bit. Sipping hot coffee slowly helps to limit the “energy crash” that often occurs when drinking it too quickly, according to Verywell Health (USA).

Điều gì xảy ra với cơ thể khi uống cà phê nóng thay vì cà phê đá? - Ảnh 1.

Some studies show that hot coffee contains more antioxidants than iced coffee.

PHOTO: AI

Sweating more

If you’re used to drinking iced coffee, switching to hot coffee may make you sweat. This isn’t because the hot drink raises your body temperature. Scientists believe that there are temperature sensors in your digestive tract, and within a minute or so of drinking something hot, they send signals that stimulate your sweat glands to work harder.

The stomach becomes more sensitive

Research shows that hot coffee is more acidic than cold brew, making it more likely to cause stomach upset or acid reflux.

Cold brew coffee is steeped in cold water for 12-24 hours, this process does not use heat so it releases less acidic compounds, making the drink smoother.

Consume less coffee, less sugar

Iced coffee is usually drunk quickly to avoid melting the ice, so many people tend to drink 2-3 cups. In contrast, hot coffee needs time to cool before drinking, so it is often drunk for a longer time, thereby helping to reduce the amount of coffee consumed in a day.

Switching from iced coffee to hot coffee can also help reduce your sugar intake significantly. Iced coffee, especially the kind sold in cafes, often contains sugar and flavoring syrups. Meanwhile, hot coffees like lattes, cappuccinos, and flat whites usually have no added sugar, allowing you to adjust the amount to your taste.

Limiting the amount of sugar in your coffee not only helps balance your energy, but also helps prevent weight gain, high blood pressure, tooth decay, diabetes, and many other health problems.

Get more antioxidants

Some studies have shown that hot coffee contains more antioxidants than iced coffee. Antioxidants help neutralize free radicals (unstable molecules that damage cells), thereby protecting the body from aging and disease. However, current research is limited and not strong enough to confirm this.

Source: https://thanhnien.vn/dieu-gi-xay-ra-voi-co-the-khi-uong-ca-phe-nong-thay-vi-ca-phe-da-185251021165829696.htm


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