Why does excess weight affect breathing during sleep and wakefulness?

Excess weight can make breathing difficult because it affects the lungs and chest. When someone is overweight, there is more fat around the chest and belly. This extra fat makes it harder for the lungs to expand and for the chest to move when breathing.

Effects on Breathing

1. Lung Expansion: Extra weight can reduce how much air the lungs can hold. This is because the lungs can't expand as much as they should.
2. Chest Movement: The extra fat can also make it harder for the chest to move when breathing in and out.
3. Breathing Muscles: The muscles that help with breathing have to work harder, which can make breathing feel tiring.

During Sleep

• Obstructive Sleep Apnea: During sleep, the airways can get blocked more easily in people with extra weight. This can cause a condition called obstructive sleep apnea, where breathing stops and starts during sleep.

By understanding how excess weight affects breathing, people can see why maintaining a healthy weight is important for good lung health.