Why sleep is not optional
Your sleep patterns may change over the years, but being well rested is essential for healthy ageing.
Japan’s Prime Minister, Sanae Takaichi, recently made headlines across the globe with a surprising admission.
In July 2026, she posted on social media that sleeping zero to three hours a night had become her regular routine since taking office, boasting that she had completely abandoned the concept of work-life balance.
While she may view this extreme sleep deprivation as a badge of honour, medical experts are deeply concerned.
For older adults, treating sleep as a luxury rather than a necessity is a recipe for serious health complications.
As we age, our sleep patterns naturally change. You might find yourself waking up earlier or finding it harder to drift off. However, the biological need for seven to eight hours of quality sleep remains exactly the same.
Getting too little sleep can jeopardise our long-term wellbeing.
One of the most critical roles of sleep is acting as a nightly “cleanse” for the brain. Our brains activate a system that flushes cellular waste and toxins, and severe sleep deprivation disrupts this process.
For older adults, chronic lack of sleep has been linked to an increased risk of developing Alzheimer’s disease and other forms of dementia. Adequate sleep is essential for consolidating memories and maintaining focus.
Your heart also relies heavily on the downtime provided by sleep. During deep sleep, your blood pressure naturally drops, giving your heart and blood vessels a much-needed break.
Consistently sleeping fewer than six hours a night keeps your body in a state of prolonged stress that increases your risk of developing high blood pressure, heart disease, or a stroke. Lack of sleep has also been linked to weight gain.
A well-rested body is a resilient body. Sleep strengthens our immune systems, helping us ward off viruses and chronic infections.
Deep sleep is when our bodies release growth hormones that repair tissues and build muscle. Without this nightly recovery, muscle weakness can set in, significantly increasing the risk of falls and physical instability.
If you are struggling with your sleep routine, consider these adjustments:
Keep your bedroom dark, quiet, and cool
Limit caffeine, heavy meals, and screen time before bed
Wake up and go to sleep at the exact same time every day.
In summary, sleep is an important cornerstone of healthy ageing. Ensuring a good night’s rest is one of the most powerful things you can do to protect your mind, your heart, and your independence.
Related reading: ABC, Victor Chang Institute, Health Direct
Disclaimer: This article is for information purposes only and should not be considered medical advice. Consult a healthcare professional about any health concerns or before making any changes to your medication, diet, or exercise routine.
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