The phrase "to increase the vitamins" means to consume more foods or supplements that contain essential nutrients your body needs to stay healthy. Full definition
By increasing your vitamin D intake to 800 international units a day reduces the risk of developing diabetes by as much as a third, he said. (health.com)
And while getting vitamin C from food or supplements is important, it's not an effective means of increasing vitamin C concentration in the skin. (liveinthenow.com)
-LSB-...] probiotics, and the fermentation process can actually increase the vitamin content of many foods. (homemademommy.net)