Dangerous Side Effects of Drinking Decaf Coffee, According to Science | Eat This Not That

BY KALEY ROBERTS
FACT CHECKED BY KIERSTEN HICKMAN
JANUARY 1, 2021

Decaffeinated coffee is touted as a coffee replacement in a variety of health arenas. Insomniacs applaud its lack of caffeine: drink decaf instead of cup number three, they say, and put sleep trouble to bed. Dentists commend the low acidity levels—a decaf pour causes less tooth damage than its traditional sister. And the beverage is even recommended to pregnant women who have been warned to watch their caffeine intake. But what if we told you that decaf cup of coffee actually has a myriad of dangerous side effects you didn't know about?

With such a range of people who are pro-decaf, it's hard to imagine that the coffee alternative could be dangerous. However, after speaking with several dietitians and doctors, we've uncovered an assortment of dangerous side effects that are brewing in the decaf coffee world. Here they are, and for more healthy tips, be sure to check out our list of The 7 Healthiest Foods to Eat Right Now.

1. You could be ingesting dangerous chemicals.

Coffee beans naturally contain caffeine, so removing the stimulant is difficult and often done in unnatural ways.

"The beans are soaked in a chemical solvent that leaches out the caffeine," says Dr. William Li, physician, scientist, president and medical director of the Angiogenesis Foundation, and author of Eat To Beat Disease: The New Science of How Your Body Can Heal Itself. "Some of the solvents are the same ones used in paint thinner or nail polish remover."

Although the FDA has approved these chemicals (namely, methylene chloride) in the decaffeination process, they still present a host of health risks.

Did you know there are even heavy metals in your protein powders?

2. These chemicals can cause major health issues.

Methylene chloride is not a mild chemical. Dr. Rashimi Byakodi points to the way inhalation exposure irritates the nose, throat, and affects the nervous system.

"It's believed to temporarily slow down our central nervous system," says Dr. Ava Williams.

Perhaps most frighteningly, Dr. Byakodi says, "Methylene chloride is a possible mutagen and is reasonably anticipated to be a human carcinogen."

Chemicals aside, even just the process of decaffeination can be problematic. "Some studies have shown a potential risk for triggering rheumatoid arthritis," says Dr. Olivia Audrey.

Dr. Williams adds that the process has been found to increase fatty acids that can affect metabolic syndrome and increase the risk of heart disease.

These chemicals can affect your nervous system, cause rheumatoid arthritis, and even present a cancer risk.

Maybe it's time to drink the real thing!

3. Decaf coffee can raise your cholesterol.

Turns out, the decaffeination process and the chemicals used in it aren't even the beginning of the story. The risks of decaf start even earlier—with the bean selection itself.

Decaf coffee, "is that typically it is made from a bean that has a higher fat content than regular arabica beans, which could pose potential consequences for cholesterol levels and long-term health of the heart as well," says Dr. Audrey.

Dr. Williams continues to explain that a commonly used bean for decaf coffee is Robusta, which "has higher diptenes, [which are] fats that stimulate fatty acid production in the body."