Cumin seeds and their oil are regarded generally as safe. To date, no adverse effects have been reported from the use of whole cumin, processed cumin, or its essential oil. It is used as a medicine for aches, inflammation, worm infestation, diarrhea, skin diseases, fever, vomiting and nausea, and as an appetizer; is also beneficial to the heart and the uterus.
Cumin is considered to have hypolipidemic properties – a hypolipidemic is a substance that helps your body control high levels of fats that hurt your heart and cholesterol levels.
The impressive nutrients in cumin helps to contract the uterine muscles and streamline the cycle.
(Sources of Information: sciencedirect.com, healthline.com & m.netmeds.com)