Are nut allergies related to mushroom allergies?

There is no scientific evidence to suggest a link between nut allergies and mushroom allergies. A person with a nut allergy may not necessarily have an allergy to mushrooms, and vice versa. Allergies are caused by the body's immune system reacting to specific proteins found in certain substances, and the proteins responsible for nut allergies are different from those responsible for mushroom allergies. It's always important to consult with a medical professional if you suspect an allergic reaction to any food, including nuts or mushrooms.