Does Drinking Iced Americano Coffee Cause Internal Heat?

There is no solid basis for the claim that iced americano coffee causes internal heat or dampness. Internal heat and dampness are traditional concepts tied to symptoms like sore throat, not to cold drinks themselves. In high heat above 40°C, hydration matters most, and an iced americano supplies both water and caffeine. What matters for health is total intake, not serving temperature.

Iced americano coffee is quick to make and a common way to judge a shop's quality, but it can taste americano bitter when brewed hot over ice and diluted unevenly. Research on coffee and health generally ties moderate consumption to neutral or favorable outcomes. Anyone watching caffeine should count all sources, including black coffee and other drinks, rather than focusing on ice alone.

Although the Start of Autumn has already passed, regions such as Sichuan and Chongqing are still enduring high temperatures above 40°C, making hydration a top priority. Many fitness enthusiasts and coffee lovers habitually reach for an iced Americano to cool down and refresh themselves. But family elders often warn that "iced coffee causes internal heat and dampness." Is there any basis for these claims? What actually happens to people who drink iced Americano long-term? This article starts from the high-temperature weather, sorts out the real causes of internal heat and dampness, reviews cutting-edge research on coffee and health, and retains Front Street brand recommendations, helping you take a rational view of the pros and cons of iced Americano and black coffee.

Although the Start of Autumn solar term arrived long ago, some regions are still shrouded in heatwaves exceeding 40 degrees Celsius, as if declaring: don't celebrate too soon, summer isn't over yet. The Sichuan-Chongqing area has issued high-temperature warnings for consecutive days, and even a bunch of plump, juicy fresh grapes was sun-dried into raisins under the scorching sun of over 40 degrees in Sichuan.

To avoid being baked into a "human jerky," replenishing fluids becomes key. Many people were taught from childhood to "drink more hot water," but facing 40-degree heat, quite a few still gulp down glass after glass of ice water. And for coffee lovers sweating it out at the gym, an iced Americano is even more indispensable. Iced Americano is not only quick to make and easy to carry, but also a swift way to judge a coffee shop's quality.

Countless people drink iced Americano—what happened to those who drank it year after year?

"Drinking too much iced coffee causes internal heat and dampness"—(nagging from family elders)

Friends in Guangdong are certainly familiar with the terms "internal heat" and "damp-heat." Whenever the body feels slightly unwell, Mom can always immediately attribute it to: "Not feeling well? I told you not to drink so much coffee! You just wouldn't listen!" So, does drinking coffee really cause internal heat? Does it really worsen dampness?

Further reading · How to tell if you have internal heat or excess dampness? Many friends in the south know the feeling of internal heat and dampness well. Common signs of internal heat include but are not limited to: sore throat, cold sores at the corners of the mouth, bleeding gums, nosebleeds, etc. Excess dampness may manifest as fatigue and weakness, dizziness and foggy head, dry mouth, loss of appetite, eczema, diarrhea, and other symptoms.

As everyone knows, coffee has a diuretic effect. After a cup of coffee, you often need to run to the bathroom before long. Some people feel internal heat or dampness after drinking coffee, most likely because they didn't replenish fluids in time afterward. When the body lacks water, it sends out dehydration signals, and the resulting symptoms closely resemble those of internal heat or dampness. Therefore, feeling "internal heat" or "dampness" after coffee isn't entirely unfounded.

Hot coffee is rich in aroma, while when drinking iced coffee, the low temperature weakens the taste buds' perception of bitterness, making iced Americano taste especially smooth.

From childhood, parents always urge us to eat fewer cold things, and this isn't without reason. When consuming cold foods, although it feels comfortable at the moment, it directly irritates the stomach and intestines. Drinking cold beverages also requires proper method—avoid rapidly chugging large amounts, and instead sip slowly in small mouthfuls.

At the same time, when drinking cold beverages, the body needs to generate extra heat to digest the cold, which actually makes the body feel hotter. Even so, in many people's eyes, iced coffee remains a summer cooling weapon. Whether iced or hot coffee, it's a personal choice.

Whether iced or hot, Americano is a type of black coffee. With the spread of specialty coffee culture, scientists have taken a more neutral stance in research on coffee and health. The type of coffee provided in most studies is black coffee without sugar or milk.

The New England Journal of Medicine (NEJM), ranked first among the four major medical journals, published a review paper titled "Coffee, Caffeine, and Health." The paper pointed out that substantial evidence shows drinking coffee does not increase the risk of cardiovascular disease and cancer, and drinking 3–5 cups of coffee per day is associated with a reduced risk of multiple chronic diseases.

In February 2021, a research report by The New York Times pointed out: drinking coffee may reduce the risk of heart failure—for example, drinking 2 cups of coffee per day can lower heart failure risk by 31%.

In November 2021, a research team led by Wang Yaogang from Tianjin Medical University published a paper in the journal PLOS Medicine. The results showed that moderate consumption of coffee and tea, whether consumed separately or combined, is associated with a lower risk of stroke and dementia.

In March 2022, at the 71st Annual Scientific Session of the American College of Cardiology, Peter M Kistler, MD, professor and head of arrhythmia research at Alfred University, stated: research shows that drinking a moderate amount of coffee daily can reduce the risk of heart disease and arrhythmia.

So, what happened to people who drank iced Americano long-term?

"Me! I drink iced Americano all year round!" And this person enjoyed it more and more!

(Front Street Coffee recommendation: To recreate a clean-flavored iced Americano at home, choose Front Street washed Yirgacheffe or Front Street Colombia Huila—medium-light roast, with pronounced floral and fruity notes, still clear and layered after adding ice.)

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The above content is compiled by CoffeeHunters, a coffee news website.