The black cumin seeds /back seeds (Nigella sativa) have some health benefits. If you want, you can look at these sources:
https://www.webmd.com/diet/black-seed-health-benefits
and
https://www.healthline.com/nutrition/kalonji-nigella-seeds

Moreover, there is a hadith of Prophet Muhammad (PBUH) saying that these seeds have the potential to cure everything except for death.