If you read my last blog — the one about belly fat, statins, alcohol and erectile dysfunction — and thought "that's not me," this one's for you.
Because those are the obvious ones. The ones most men at least vaguely know they should be paying attention to.
These five are the ones flying completely under the radar. The ones where the damage is building quietly, without a single symptom, while you get on with your life assuming everything is basically fine.
Spoiler: it might not be.
Your partner has been nudging you in the night for years. You wake up exhausted no matter how long you sleep. You fall asleep on the couch before 9pm and call it "just being tired."
You've put it down to stress, a busy week, getting older.
But here's what may actually be happening. If you snore heavily and wake unrefreshed, there is a real chance you have obstructive sleep apnoea — a condition where your airway collapses repeatedly through the night, cutting off your oxygen supply sometimes hundreds of times while you sleep.
People with sleep apnoea are five times more likely to develop atrial fibrillation and 60% more likely to experience a stroke later in life. That's not a minor footnote. That's a significant, preventable risk that most men dismiss because the primary symptom is snoring — which doesn't feel like a medical emergency.
Sleep apnoea in midlife is also associated with a 26% increased risk of developing dementia. Your brain needs oxygen to clear waste products overnight. Every time your airway closes, that process is interrupted. Over years, the cumulative effect on your brain is measurable.
Studies of men over 40 found that around 70% of those with multiple chronic health conditions had undiagnosed sleep apnoea. The condition is extraordinarily common and extraordinarily underdiagnosed — because most men never mention it to their GP, and their partners have simply learned to sleep with earplugs.
If you wake up tired, snore heavily, or have been told you stop breathing in your sleep — this is the conversation to have with your doctor. A sleep study is simple, often done at home, and the treatment when needed is highly effective.
Don't lose years of brain health and heart health because you thought it was just snoring.
When most people think of depression, they picture someone who can't get out of bed. Someone sad, tearful, visibly struggling.
That is not what depression looks like in most men. And that mismatch is costing lives.
Depression in men typically presents as irritability, anger, workaholism, risk-taking, and emotional numbness rather than sadness. This leads to chronic underdiagnosis — while suicide rates remain devastatingly high.
Think about that. The man who is increasingly short-tempered. Who has quietly withdrawn from friends. Who is working longer hours, drinking more, less interested in the things he used to enjoy. Who seems fine on the surface but is harder to reach than he used to be.
That is not a personality change. That is often depression.
While women are twice as likely to be diagnosed with depression, men die by suicide at four times the rate. That math doesn't add up unless we're missing something massive about how depression actually shows up in half the population.
In New Zealand, men in midlife represent one of the highest risk groups for suicide. Not because they are more fragile — but because the signs are misread, by themselves and everyone around them, as stress, a bad patch, or just the way he is.
This one sits right at the intersection of lifestyle and clinical care. As a health coach, what I work on is the lifestyle layer — sleep, movement, connection, purpose, stress — all of which have a measurable impact on mood and mental health. But I want to be direct: if any of this is resonating, please talk to your GP. This is not something to manage alone or wait out.
The most important thing you can do is name it. Depression in men is real, common, and highly treatable. The barrier is almost never the treatment — it's the conversation that gets you there.
You're exhausted despite sleeping. Your motivation has quietly flatlined. The gym sessions that used to energise you now feel like a chore you can't face. Your mood is lower, your temper is shorter, and your sex drive has dropped to somewhere around zero.
You've put this down to stress, age, a busy life. Everyone feels like this eventually, right?
Maybe. But maybe not.
Testosterone levels start declining from around the age of 30 — and low testosterone can have a significant impact on your health and how you feel, as it is important for maintaining the characteristics that make you look and feel like a man.
Most men do not initially recognise that symptoms of low testosterone — fatigue, weight gain, erectile dysfunction, low libido, or difficulty concentrating — are in fact signs of low testosterone, since these symptoms can be attributable to other things or are simply written off as ageing.
Here is what makes this particularly frustrating: the symptoms of low testosterone are almost identical to the symptoms of depression, burnout, metabolic dysfunction and poor sleep. They overlap completely. Which means men spend years — sometimes decades — treating the symptoms without ever investigating the underlying hormonal picture.
Low testosterone is also linked to elevated cortisol levels, which can lead to irritability, anxiety or depression — and muscle loss, which makes it harder to prevent fat gain, which further reduces testosterone levels. It becomes a self-reinforcing cycle that gets harder to break the longer it goes unaddressed.
The fix starts with a blood test — done in the morning when levels are highest. That's it. A single test can tell you whether this is a contributing factor or not. If it is, there are options — both lifestyle-based and clinical.
But you cannot address something you have never measured. And most men in their 40s and 50s have never had their testosterone tested.
Here is a statistic that should stop you in your tracks.
Approximately 25% of New Zealanders — that's 1 in 4 — have pre-diabetes. And most people with pre-diabetes don't know they have it.
Pre-diabetes means your blood sugar is creeping higher than it should be. Your cells are becoming resistant to insulin. The machinery that regulates your energy, your weight, your inflammation and your cardiovascular risk is starting to malfunction.
And there are no symptoms. None at all.
You feel completely normal while your body quietly moves towards Type 2 diabetes, cardiovascular disease and all the complications that come with them.
Here's the part that matters most. Lifestyle change in people with pre-diabetes reduces their chance of developing diabetes by approximately 50–60% over three years. The window to reverse this completely — with food, movement and targeted lifestyle change — is wide open right now. But it closes. And once Type 2 diabetes is established, this becomes harder.
This is exactly the kind of thing that shows up in a Brightly Baseline. Your HbA1c — the blood marker that reveals your average blood sugar over the past three months — is one of the biomarkers we review. It is one of the most important numbers you can know, and one of the least known by the men who most need to see it.
If you have a growing belly, a family history of diabetes, drink regularly and don't exercise much — you are in the higher-risk category for pre-diabetes. The test is a simple blood draw. The cost of not doing it is enormous.
This is the one I want every man reading this blog to act on today.
At least 25% of the population in New Zealand has high blood pressure. Many Kiwis are unaware they even have it — and of those who are, 50% remain hypertensive even when on medication.
High blood pressure is called the silent killer for a very specific reason. The damage that high blood pressure causes your internal organs does not cause any symptoms until serious damage has been done.
No headaches. No dizziness. No warning signs. Just your arteries slowly being damaged, your heart working harder than it should, plaque building up, your kidneys under strain — while you feel completely fine.
Unchecked high blood pressure damages the delicate lining of artery walls, causing tiny tears where plaque accumulates. This process narrows the arteries and restricts blood flow — and as arteries narrow, the heart must work even harder, creating a dangerous cycle of elevated pressure and further arterial damage. Over time this increases your risk of heart attack, stroke and kidney damage.
The frustrating truth is that high blood pressure is one of the most manageable conditions there is — with the right lifestyle changes and, where needed, medication. It is normally relatively easy to manage through a combination of lifestyle interventions and cost-effective medications — yet levels of awareness, treatment and control remain low.
But you cannot manage what you have never measured.
When did you last have your blood pressure checked? Not in passing at the GP — properly monitored, at rest, with appropriate follow-up? Most midlife men cannot answer that question confidently. Many haven't owned a blood pressure cuff in their lives.
This is the simplest ask in this entire blog. Get your blood pressure checked this week. If it's fine, great — you know. If it's not, you've just given yourself the gift of catching something before it causes irreversible damage.
Here's what sleep apnoea, depression, low testosterone, pre-diabetes and high blood pressure all have in common.
They are all silent. They all cause significant, measurable damage over years before producing a single obvious symptom. They are all highly manageable when caught early. And they are all things that the majority of men in midlife have never properly investigated — because they feel fine.
Feeling fine is not a health strategy. It is an assumption. And in midlife, assumptions are expensive.
The Brightly Baseline exists precisely for this reason — to look at the things you cannot feel, measure what's actually happening, and give you the information you need to act while the window is still open.
Because waiting until you feel different is not a plan. By then, some of it will be harder to fix.
Shelley is Head Health Coach at Brightly
Ready to find out what your body is actually doing? Book your Brightly Baseline at agebrightly.co.nz — a comprehensive health assessment reviewed by our dedicated clinical team. The best time to start was ten years ago. The second best time is now.