Have you ever been going about your day and then suddenly hear your stomach growling? It could happen when you’re sitting in a classroom or an important meeting, and the timing couldn’t be any better. While this is a common cue from your body, stomach rumbling can often occur at one of the worst moments.
This all too familiar feeling of stomach growling is known as ‘borborygmi’. While borborygmi is a completely normal part of your digestive system’s activity, it can get pretty embarrassing at times. We all have experienced this sudden rumble coming from our midsection, but what is the cause behind this awful sound? Let’s dive in to find out why our stomach growls upon hunger!
Reasons Behind Stomach Growling Upon Hunger
Here are the reasons that will explain why our stomachs start growling when we feel hungry!
- Peristalsis: This is a common process that happens in your body. Your digestive tract, from your oesophagus to your intestines, is a long, muscular tube. The muscles lining this tube contract in wave-like motions to push food, fluids, and air along. This entire process is called peristalsis. It occurs all the time, even when your stomach is empty, making your belly growl.
- Hunger Hormones: Your stomach produces a hormone called ‘ghrelin’ when it has been empty for a few hours. This ghrelin sends a signal to your brain that it’s time to eat food. It also stimulates stronger contractions in your digestive system, intensifying the sounds.
- Empty Stomach Amplifies Sound: When you haven’t eaten for a while, your stomach and intestines remain relatively empty. This means that there’s less solid material and liquid to muffle the sounds of these muscular contractions and the movement of gas and fluids. Hence, your empty stomach can amplify these stomach growling sounds.
When to See a Doctor?
Your stomach growls are generally harmless and will not require you to see your doctor. You should consult a doctor if you experience persistent stomach cramps, diarrhoea, nausea or vomiting along with stomach growling.