Why are people truly scared of their health risks?

Why would you choose not to know...?

I met a man recently. Mid-fifties, cheerful, clearly enjoying life. I offered him a free cholesterol and heart health check: Ten minutes, a finger-prick of blood and a clear picture of his cardiovascular risk for the next decade. He looked at me and said: "No thanks. I don't want to know."

He's not alone. Psychologists call it the Ostrich Effect - the tendency to avoid information that causes anxiety, burying our heads in the sand to protect ourselves from emotional discomfort and maintain a false sense of security¹. The term was coined by behavioural economists studying investors who stopped checking their portfolios when markets fell². As one study put it, fear of receiving bad news about one's health can lead people to avoid seeking out information that, inronically, may be crucial for health maintenance¹.

Research shows that one of the most common reasons people avoid health information is not wanting to make corresponding behavioural changes - if the news is bad, they'd have to do something about it. Cut the cigarettes. Watch what you eat. The man I met was essentially saying: I'd rather gamble with my future than inconvenience my present.

It feels rational in the moment. What you don't know can't worry you. Except that it can kill you.

Research shows that one of the most common reasons people avoid health information is not wanting to make corresponding behavioural changes - if the news is bad, they'd have to do something about it⁴.

But here's the thing. He wasn't being asked to do the test for the person he is today. He was being asked to do it for the person he will be in ten years — the one who either catches a problem early, or suffers a heart attack that changes everything far more dramatically than a healthier breakfast ever would.

And the evidence on those "inconvenient" changes is overwhemingly hopeful. Take the cigarettes. The CDC's anaylsis of smoking cessation shows the risk of coronary heart disease falls sharply within one to two years of quitting, and the adding risk drops by half within three to six years⁵. Cleveland Clinic's vascular specialists put it plainly: once a person quits smoking, by about five years out their risk of developing or progressing cardiovascular disease starts to come down dramatically⁶. Johns Hopkins Medicine notes that stopping smoking cuts the risk of heart disease - and of dying from it - by half⁷. NHS cardiac rehabilitation teams tell patients that quitting delivers a benefit greater than or equal to their heart medication⁸.  Small changes. Enormous returns. But only if you know you need to make them.

My grandmother used to say she was "perfectly healthy until she visited a doctor." When she finally did - and learned her real risk - she made small, quiet changes. She lived to 92. She never credited the test. But the numbers tell their own story.

The NHS is under extraordinary pressure, in large part because we treat disease rather than prevent it. This winter was the busiest on record: 3.4 million patients admitted, transferred or discharged through major A&E departments between October and January, with over a thousand patients in hospital with flu every day at the peak⁹. The waiting list still stands at 7.29 million. And the patern is structural, not seasonal - Lord Darzi's independent investigation of the NHS found a health service that has drifted steadily towards late-stage, hospital-based treatment at the expense of prevention and community care¹⁰. Every person who chooses not to know is, eventually, a cost that falls on all of us.

Ten minutes. A tiny finger-prick. The rest of your life.

The only question worth asking is: what are you actually afraid of?