Cov vitamins yog cov khoom tseem ceeb rau kev tswj lub neej thiab kev noj qab haus huv.Nws yog ib qho tseem ceeb rau cov dev kom muaj sia nyob, loj hlob thiab txhim kho, tswj lub cev lub cev thiab cov metabolism.Cov vitamins tsis yog qhov tseem ceeb hauv kev noj zaub mov zoo dua li cov protein, rog, carbohydrates thiab cov zaub mov.Txawm hais tias cov vitamins tsis yog lub zog los yog cov khoom tseem ceeb uas ua rau lub cev nqaij daim tawv, lawv lub luag haujlwm yog nyob rau hauv lawv cov khoom lom neeg.Qee cov vitamins tsim thaiv cov enzymes;Lwm yam xws li thiamine, riboflavin, thiab niacin tsim coenzymes nrog rau lwm tus.Cov enzymes thiab coenzymes koom nrog cov tshuaj tiv thaiv txheej txheem hauv ntau yam txheej txheem metabolic ntawm tus dev.Yog li, nws ua lub luag haujlwm tseem ceeb hauv cov metabolism hauv cov protein, rog, carbohydrates, ntsev inorganic thiab lwm yam khoom hauv lub cev.