9 Unexpected Side Effects of Cumin Seeds Cumin is one of the essential spices used in everyday cooking, especially in Indian cuisines. Be it the final touch of seasoning of the humble lentil soup or that secret spice paste bursting with flavor for that special dinner meal, cumin seeds are a must-add! Having said that, it might come as a surprise that there could be side effects of cumin as well! While cumin offers a ton of health benefits along with its refreshing flavor, there are certain things you need to be aware of, before using cumin too much. Wondering what and how? Fret not, we have done all the research and summed it all up for you in this article! Read on to know more about the side effects, like spice allergies, caused by cumin seeds. Heartburn, belching, low blood sugar levels, and heavy menstrual cycle. Excess consumption may have an abortifacient effect and lead to miscarriage in pregnant individuals. May interact with diabetes medications and drugs that slow blood clotting. If you experience continued heavy bleeding during menstruation, or skin rashes then seek medical help. What Is The Best Substitute For Cumin Seeds? How To Store Cumin Seeds? Like everything else, cumin seeds have their own set of side effects. Cumin seeds are known to help with gastrointestinal distress, but ironically they can also cause one of the most common digestive problems, heartburn! Cumin (jeera) seeds facilitate the eviction of more gas into your gastrointestinal tract (1), (2). This could be more severe in some cases where heartburn affects existing health issues like irritable bowel syndrome may lead to other issues like diarrhea and stomach pain. Some symptoms of heartburn include nausea (and dizziness) or vomiting. Linh, a blogger detailing her first trip to India, discovered her allergy to cumin.