Yep, it is ...
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Cabbage (one 89g serving) is high in Vitamin C and Vitamin K. It also contains vitamin A and Folate.
Vitamin A is a fat soluble vitamin that is essential for eye health. Not having enough may cause night blindness.
Vitamin C, also called ascorbic acid, is water soluble and is said to be good for your immune system. If you don't have enough you may develop scurvy and have other problems like wound healing.
Folate, a form of Vitamin B9, is also water soluble and is needed to make DNA and RNA in the body. Luckily, vegetables like cabbage are good sources.
Eat and be healthy.
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