A review of 11 studies in 783 participants with obesity or overweight found that kalonji powder and oil reduced body weight by an average of 4.6 pounds (2.1 kg) and waist circumference by 1.4 inches (3.5 cm) over 6–12 weeks, compared with a placebo ( 6). Another benefit is that kalonji can help to improve the health of your digestive system. It contains selenium and other minerals that are important for maintaining the health of your body. Kalwanji seeds can also be beneficial for your digestive health when combined with other spices, such as ginger and cardamom. It is very easy to add a handful of raw or cooked kanji seeds to your diet and start seeing results. You won’t have to worry about your weight again.

The Prophet of Islam, Muhammad, even believed the seeds to be a remedy for all diseases except death ( 2). Another review of 13 studies with 875 participants showed that kalonji powder and oil reduced body weight by 4 pounds (1.8 kg) but had no significant effect on waist circumference over 6–13 weeks, compared with placebo ( 7). Nigella seed oil is known to help with weight loss. A clinical trial in 50 people with obesity revealed that having nigella seed oil with a low-calorie diet for 8 weeks can decrease oxidative damage and body weight. Including kalonji in your diet regularly can help you control your weight.Salarinia R, et al. (2016). Safety evaluation of Phytovagex, a pessary formulation of Nigella sativa, on pregnant rats.

On the other hand, chronic inflammation is believed to contribute to a variety of diseases, such as cancer, diabetes and heart disease. El-Mahdy M A, et al. (2005). Thymoquinone induces apoptosis through activation of caspase-8 and mitochondrial events in p53-null myeloblastic leukemia HL-60 cells.Saliha B, Sipahib T, Oybak Dönmez, E (2009). "Ancient nigella seeds from Boyalı Höyük in north-central Turkey". Journal of Ethnopharmacology. 124 (3): 416–20. doi: 10.1016/j.jep.2009.05.039. PMID 19505557. {{ cite journal}}: CS1 maint: multiple names: authors list ( link) Another study in 57 people with diabetes showed that supplementing with kalonji for one year decreased total and LDL cholesterol, all while increasing HDL cholesterol.