By Domenic Chindamo - Pharmacist, Lygon Everyday Chemist, Brunswick East

Why good sleep may be the most underestimated form of heart care.

“Sleep that knits up the ravell’d sleave of care.”
- William Shakespeare

Sleep is not a luxury. It is not optional.

From a medical perspective, sleep is one of the most powerful and underestimated tools for protecting heart health, blood pressure, cholesterol levels, hormone balance, and long-term cardiovascular outcomes.

We've been running in-pharmacy sleep studies at Lygon Everyday Chemist since 2018. Over that time, we've seen locals walk in tired - and walk out months later healthier, lighter, clearer-headed, and in many cases with better blood pressure and cardiovascular markers.

Sleep is one of the four pillars of health:

• Sleep
• Nutrition
• Movement
• Mental Health

Ignore one, and the others struggle.

'I love sleep. My life has the tendency to fall apart when I'm awake.'

- Ernest Hemingway.

Sleep Is Active Repair, Not Passive Rest

Sleep is not simply rest - it is active biological repair.

During healthy sleep:

• Blood pressure drops by 10-20%
• Heart rate slows
• Stress hormones fall
• Blood vessels relax and repair
• Inflammation reduces

Clinicians call this nocturnal dipping. People who lose this dip have a significantly higher risk of heart attack and stroke.

Sleep is when the pump finally gets serviced.

'Sleep is the best meditation.'

- Dalai Lama

Daylight Saving: The One-Hour Experiment No One Signed Up For

Sleep researcher Matthew Walker, author of 'Why We Sleep', describes one of the most powerful natural experiments in sleep science.

Every year, when daylight saving time begins and we lose just ONE hour of sleep:

• Heart attacks rise by approximately 20-25% on the following Monday
• Hospital admissions increase
• Stroke and accident rates climb

Nothing else changes. No diet shift. No exercise drop.

Just one hour less sleep - and the heart pays the price.

If a medication caused this level of harm, it would be withdrawn immediately.

'It is a common experience that a problem difficult at night is resolved in the morning after the committee of sleep has worked on it.'

- John Steinbeck

Sleep, Hormones, and the 'Testicles' Lecture

Matthew Walker famously opens some lectures with:

'Today, we're going to talk about testicles.:

Why? Because just one week of sleeping five hours per nigth has been shown to:

• Reduce testosterone levels in men by 10-15%
• Disrupt oestrogen regulation in women
• Increase hunger hormones
• Increase cortisol (stress hormone)

In hormonal terms, a sleep-deprived 40-year-old can resemble someone a decade older.

These hormonal shifts directly affect blood pressure, cholesterol metabolism, weight, and heart health.

“The nicest thing for me is sleep, then at least I can dream.”
- Marilyn Monroe

Poor Sleep and Blood Pressure: The Quiet Strain

• Blood pressure fails to dip overnight
• The nervous system stays in fight-or-flight 
• The heart pumps against higher resistance

In practice, we often see people with 'hard-to-control' blood pressure whose missing piece turns out to be poor sleep or undiagnosed sleep apnoea.

'A ruffled mind makes a restless pillow.'

- Charlotte Bronte

Sleep Apnoea: The Heart’s Night-Time Enemy

Obstructive sleep apnoea causes repeated airway collapse during sleep, leading to:

• Oxygen drops 
• Sudden blood-pressure spikes
• Stress hormone surges
• Heart rhythm strain

Untreated sleep apnoea is strongly linked to hypertension, heart failure, atrial fibrillation, stroke, and type 2 diabetes.

Snoring isn’t just noise - medically, it’s information.

“Laugh and the world laughs with you, snore and you sleep alone.”
- Anthony Burgess

The Heart as a Pump (and Why Sleep Matters)

Think of the heart as a pump connected to pipes.

• High pressure damages the pipes
• Constant demand wears the pump
• No downtime accelerates failure

Sleep is the only time the system naturally slows down, reduces pressure, and repairs itself.

No medication fully replaces this physiological reset.

“Early to bed and early to rise makes a man healthy, wealthy and wise.”
- Benjamin Franklin

Real People, Real Outcomes (Our Experience Since 2018)

Without sharing names, we can confidently say we’ve seen locals who:

• Thought fatigue was 'just ageing'
• Didn’t realise sleep was driving their blood pressure
• Struggled with weight despite effort
• Had cholesterol that wouldn’t improve

When sleep was addressed - alongside nutrition, movement, and mental health - many experienced life-changing improvements over time.

Sleep wasn’t the only pillar, but it was often the missing one.

“One cannot think well, love well, sleep well, if one has not slept well.”
- Virginia Woolf

Not One Solution - A Complete Sleep Strategy

A sleep study doesn’t mean 'you’re getting a machine'.

It means answers.

Depending on results, support may include:

• CPAP therapy (gold standard for moderate–severe apnoea) 
• Oral appliances / mouth guards
• Nasal airflow supports (e.g. Mute)
• Lifestyle and positional strategies

The greatest risk is not treatment.

The greatest risk is doing nothing.

“Sleep - those little slices of death - how I loathe them.”
- Edgar Allan Poe

Ready to Understand Your Sleep?

If you’re wondering whether your sleep could be affecting your heart, blood pressure, energy, or weight:

• Book a sleep study online
• Or come in and speak with the team at Lygon Everyday Chemist

Understanding your sleep is often the first step to changing your health trajectory.

References

1. Cappuccio FP et al. European Heart Journal (2011).
2. Covassin N, Singh P. Sleep Medicine Clinics (2016).
3. Janszky I, Ljung R. New England Journal of Medicine (2008).
4. Javaheri S, Redline S. Current Hypertension Reports (2017).
5. Knutson KL, Van Cauter E. Annals of the NY Academy of Sciences (2008).
6. Leproult R, Van Cauter E. JAMA (2011).
7. Peppard PE et al. New England Journal of Medicine (2000).
8. Somers VK et al. Circulation (2008).
9. Tobaldini E et al. Neuroscience & Biobehavioral Reviews (2017).
10. Walker M. Why We Sleep. Scribner (2017).