It's impossible to say with any certainty that was down to an economic system change and not the myriad of other issues plaguing the Soviet states.
And maybe on balance hunger went down, but in particular for a whole lot of those Soviet states, the transitions from the failing "communist" state and the market-based alternatives was incredibly harsh and involved a whole lot of starving as the prices of food and other critical goods soared out of reach of Soviet citizens, not even going into the psychological effects.
Also also, insofar as "communism" "failed" (the USSR was incredibly authoritarian and corrupt, many communists and socialists take big issues with them or China for that matter being called communist but I digress), it "failed" alongside a host of economic sanctions brought upon it by it's Capitalist neighbors, utterly terrified at it's very existence. I mean Christ calling someone communist is still an insult in the United States, and an attack on a politician here too, decades after the Red Scare supposedly ended.
What sanctions? The USA and Canada literally sold huge quantities of grain to the USSR even during the height of the Cold War. Without those food sales even more Soviet citizens would have gone hungry.
And maybe on balance hunger went down, but in particular for a whole lot of those Soviet states, the transitions from the failing "communist" state and the market-based alternatives was incredibly harsh and involved a whole lot of starving as the prices of food and other critical goods soared out of reach of Soviet citizens, not even going into the psychological effects.
Also also, insofar as "communism" "failed" (the USSR was incredibly authoritarian and corrupt, many communists and socialists take big issues with them or China for that matter being called communist but I digress), it "failed" alongside a host of economic sanctions brought upon it by it's Capitalist neighbors, utterly terrified at it's very existence. I mean Christ calling someone communist is still an insult in the United States, and an attack on a politician here too, decades after the Red Scare supposedly ended.