Yes, it does. My daughter has been taking arka since she was 6 months old. I feel she has good immunity. She doesn’t fall sick that often.
Having said that, I also feel living a holistic life is the key. For eg., We might give our children arka and let our kids eat bread the whole week, that might not work in building a strong immunity.
I am not taking away the amazing benefits of arka, I am just trying to say that along with arka, parents should also be conscious of the food our kids eat.