GB Mushroom coffee side effects weight loss is a blend of mushroom extracts and ground coffee beans that can be prepared like regular coffee. Its advocates claim it has less caffeine than traditional coffee and can boost energy levels without the jitters or anxiety that come with high doses of caffeine. Some options also contain adaptogens, herbs that help the body manage stress and restore balance after a stressful period. The adaptogens in lion’s mane, turkey tail, reishi and cordyceps are believed to reduce cortisol, an adrenaline-like hormone that can increase anxiety and lead to overeating.

GB Mushroom Coffee Side Effects and Weight Loss Benefits

Some research shows that some mushrooms may have cancer-prevention and heart disease-fighting properties, but more human studies are needed. Chaga mushrooms, for example, have been shown to reduce inflammation and may even help fight ulcers. However, some types of mushrooms used in mushroom coffee—including chaga, reishi, and turkey tail—can be hard on the digestive tract and cause an upset stomach, rapid heart rate and nervousness, especially in people with kidney or liver problems. They can also raise oxalates in the urine, which can lead to kidney stones if too much is consumed.

While mushroom coffee isn’t likely to harm most adults who drink it, it is a new phenomenon with few scientific trials and is unlikely to help anyone lose weight. “Caffeine can increase metabolism and burn calories, but it doesn’t help directly with weight loss,” says dietitian Andrea Salazar Castellanos, who recommends avoiding mushroom coffee if you have kidney or liver problems, experience digestive issues or take a medication such as beta-blockers, which may interfere with the absorption of caffeine.