Snoring is not necessarily a damaging condition however it's presence can be an indicator of sleep disorders such as obstructive sleep apnoea. Such sleep disordered breathing (SDB) can have significant ramifications upon one's physical and mental health long term.
Consistent disruptions to sleep breathing can cause reduced oxygen levels in the blood. Your brain then sends a signal to your heart, which goes into overdrive to arouse you from your sleep so you can breathe normally again. Repeated episodes of this cycle puts pressure on the heart in the long term resulting in higher risks of cardiovascular disease.
With recurrent episodes of awakening due to reduced oxygen levels, your body is unable to descend into extended periods of deep reparative sleep, known as REM sleep. This is crucial to the consolidation of memories, repair from daily activities as well as many other things. Furthermore, sufferers awaken grumpy due to poor quality sleep.
Extended periods of blood oxygen desaturation is very damaging for your brain. The insufficient oxygen levels renders the brain unable to perform its duties while you sleep. Of these, one significant aspect is neural repair. This inability to repair completely, each day, will accelerate the degeneration of the brain thereby increasing the risk of developing memory loss, visual loss, headaches and much more.