Digirta cagaaran waa bakhaar ay ku jiraan nafaqooyin lagama maarmaan u ah shaqada caafimaadka leh ee jidhkeena. Tixgeli sida digir uu uga caawin karo ka hortagga horumarinta cudurrada qaarkood, iyo sidoo kale bixinta guryaha ka hortagga.
Tani waxay sabab u tahay maadada sare ee antioxidants, sida: flavonoids - catechin iyo epicatechin carotenoids - alfa-carotene iyo beta-carotene phenolic acids - ferulic iyo caffeic acids polyphenols - coumestrol digirta cagaaran waxay leeyihiin sifooyin anti-bararka waxayna ka kooban yihiin: fitamiin C. fitamiin E iyo xaddi ku filan zinc, omega-3 oo ah qaabka alfa-linolenic acid. Maadada sare ee fiber-ka iyo borotiinka waxay hoos u dhigtaa nuugista sonkorta. Qalabka Antioxidant iyo anti-bararka ayaa ka hortagaya horumarinta caabbinta insulin (nooca 2 ee sonkorowga). Dhammaan karbohaydraytyadu waa sonkor si dabiici ah u dhacda iyo istaarijyo aan lahayn sonkor cad ama kiimikooyin si ay kaaga dhigaan dareen. Hal koob oo digir cagaaran ah ayaa ka kooban 44% qiimaha maalinlaha ah ee fitamiin K, kaas oo caawiya nuugista calcium ee lafaha. Faytamiin B wuxuu ka hortagaa horumarinta lafaha. Niacin-ka ku jira digirku wuxuu yareeyaa soo saarista triglycerides iyo lipoprotein cufnaanta yar, taas oo yaraynaysa kolestaroolka "xun" ee jirka waxayna kordhisaa heerka "wanaagsan".