Does food play a role in shedding?

Hi... I've just changed my dog's food to a new brand...it's been about 3 weeks now and I've noticed a decline in his shedding --- He is a Siberian Husky and even thought I was brushing him twice a week - he was shedding alot -- after I changed his food (not for the shedding reason -- only because I researched and found that the brand I was giving him was not very good) -- I've noticed he isn't shedding as much.

Does anyone know if it could be the food change?

Thanks