Does your stomach need to growl in order for you be hungry?

Not always. Stomach growling, also known as borborygmi, is caused by the movement of gas and fluids in the digestive system. It's a normal occurrence and not necessarily a sign of hunger. Hunger is a complex sensation influenced by various factors, including hormones, blood sugar levels, and cognitive signals from the brain. Sometimes you might feel hungry without any stomach growling, and sometimes it can occur when you're not hungry.