Yes, addictions can run in families, and genetics can play a role, but it's not the whole story. While there is evidence suggesting that tendencies like alcoholism can be influenced by genetics, it's important to understand that the environment also plays a crucial role. If a grandparent was an alcoholic and emotionally distant, this could create a cold, unsupportive environment for their child. That child might then turn to substances for comfort, repeating the pattern. When this cycle continues, it can seem like addiction is purely genetic, but it's also heavily shaped by the environment and behaviors passed down through generations.