A study published by the American Chemical Society shows that cold coffee is slightly less acidic than hot coffee. It has compounds such as raw polysaccharides that, according to Healthline, can increase the immunity of the digestive system and reduce intestinal irritation. TO; DR? Cold beer may be more harmful to your gut compared to hot coffee if you're sensitive to highly acidic foods and beverages. If not, continue to consume caffeine with whichever form of coffee your stomach (and popsicle) prefers the most.
The reason cold beer usually (but not always) contains more caffeine than regular coffee is because of the way it's brewed. While iced coffee is simply regular coffee that has been cooled on ice, cold coffee is made using a completely different process, that is, without heat. However, Sauceda points out that whether or not someone finds that cold beer is more pleasant for the intestine will depend on the person's sensitivity. Drinking more caffeine than the body can handle can cause intense stomach and intestinal contractions, and it's easy to do that with cold beer, since the drink is usually high in caffeine and cold drinks are easier to drink quickly than hot ones.
Sauceda also points out that, for coffee lovers, cold beer can be a preferred alternative to hot coffee during the summer months, regardless of acidity, and that alone is a good reason to seek it out. Not to be confused with iced coffee, which consists of hot coffee served over ice, cold coffee is prepared by soaking ground coffee in water at temperatures between 68°F and 77°F for eight to 24 hours. In addition, cold beer contains heart-healthy compounds, such as magnesium, antioxidants, and anti-inflammatory agents. It's for this reason that personal trainer, advocate of intermittent fasting and author of The 2 Meal Day Max Lowery only drinks cold beer.
Sauceda says that anyone experiencing digestive discomfort can try a cold beer to see if there's a difference. You'll be forgiven for thinking that iced coffee and cold beer are the same thing, but you'd be wrong. So what if your stomach hurts after drinking cold beer and you want to be able to enjoy it in the future without feeling sick afterwards? Cold coffee is a smooth and tasty beverage that seems to be gaining popularity in coffee shops and homes every day. More research led Lowery to discover that cold-brewed coffee can eliminate up to 70% of acidity.
Lowery discovers that the sweeter taste makes cold beer more pleasant than regular coffee, and now he makes his own with a homemade infusion pitcher, meaning he can control the intensity of his cold beer depending on how long it's brewed. Cold beer is created simply by soaking ground coffee beans in cold water or at room temperature for 12 to 24 hours. Cold-brewed coffee can therefore be up to 70% less acidic than traditional hot coffee, making it easier to treat people suffering from the symptoms of irritable bowel syndrome and giving it a much milder and sweeter taste.