Getting too little sleep does more than leave you feeling tired the next day. According to US based cardiothoracic specialist Dr Jeremy London chronic sleep deprivation can significantly increase the risk of serious health conditions including cardiovascular disease type 2 diabetes and certain cancers.
In a recent social media video the surgeon who brings over 25 years of clinical experience explained that sleep duration follows what experts call a U shaped risk curve. That means both insufficient sleep and excessive sleep are linked to higher health risks. He noted that regularly sleeping fewer than six hours per night or more than nine hours may negatively impact long term wellbeing while the optimal range for most adults falls between six and eight hours of quality rest.
Dr London emphasised that humans are biologically wired to follow a circadian rhythm aligned with natural daylight patterns. Disrupting this internal clock by staying up late working night schedules or maintaining inconsistent routines can interfere with hormone regulation appetite control stress levels and metabolic balance. Many people notice increased cravings mood swings and brain fog after an all nighter which he says reflects deeper physiological disruption.
While an occasional restless night is unlikely to cause lasting harm the concern arises when poor sleep becomes a long term habit. Over time persistent sleep imbalance may elevate the likelihood of developing heart disease metabolic disorders and some cancers. According to Dr London sleep acts as a foundational pillar of overall health supporting immune function cardiovascular stability and hormonal balance.
Health professionals generally advise adults to aim for consistent high quality sleep within the recommended window and to seek medical advice if chronic insomnia or excessive sleepiness persists. Prioritising rest may be one of the simplest yet most powerful lifestyle changes for protecting long term heart health.
This article is intended for informational purposes only and does not replace professional medical consultation diagnosis or treatment.