Black seed is said to help boost the immune system, fight cancer, prevent pregnancy, reduce swelling and lessen allergic reactions by acting as an antihistamine. They come from Nigella sativa, a small plant with pale purple, blue, or white flowers that grows in Eastern Europe, Western Asia, and the Middle East. Research has also shown that back seed may aid in lowering people's body mass index. The oil produced from it is also very beneficial for the skin in treating eczema, acne and psoriasis
