What do YOU know about your own health? Here are 10 key facts people should know but often don't...

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Many of us will try out the latest diet or fitness fad in the quest for the body beautiful.

But when it comes to key facts about our own health, our knowledge is often lacking.

In fact, most are pretty clueless about their health – with more than half admitting they don't even know their own blood type, a study has found.

Millions have no idea what their cholesterol levels are or what their normal blood pressure or BMI are.

What weight is healthy for your height and how many calories and glasses of water should be consumed daily also leave many stumped.

Nearly half said they do not know their blood pressure or what a good reading was for it

The survey of 2,000 UK adults also reveals that 35 per cent of people have never had a medical check up.

Meanwhile more than four in ten admit it would take a health scare before they really start to worry about things issues like cholesterol levels or blood pressure.

And the average person doesn't start to take more notice of their health and lifestyle choices until they reach the age of 47.

A spokesperson for Healthspan, which commissioned the research, said often people ignored their health until it becomes an issue.

'People still seem to know little about heart health. As a result, unless it is something you know you need to keep an eye on, many would struggle to tell you what their blood pressure or cholesterol levels are, or even what they should be in order for them to be healthy.

'We carry on with our lifestyles without any real knowledge of the impact it could be having on our general health, as well as on important organs such as our heart. 

'But waiting until a problem presents itself could be too late to do anything about it.

'By finding out about key areas of your health early on, and keeping an eye on things such as your blood pressure, vitamin D and cholesterol levels, you could prevent any health problem occurring before it even starts.'

Three quarters admit they have no idea what their cholesterol levels are, with almost four in ten saying they have never had them checked.

Almost half also said that even if they did, they don't actually know what is considered healthy.

More than half of people survey revealed they did not know their own blood type

Forty-three per cent are unaware what their current blood pressure is, with a third saying they don't know what a 'good' reading is.

Cardiologist Dr Ross Walker said: 'Being heart aware is vital at any age but especially once we get to our forties and fifties.

'Health checks should be mandatory when you hit your forties. All males should have a coronary calcium score at age 50 & females at 60.

'This does not involve dye or injections & is low radiation, but is easily the most predictive test for heart disease risk.' 

The study, which was timed to coincide with the launch of a new heart health supplement Ubiquinol Max, also found that although 68 per cent think their heart is in good health, 42 per cent admit they have no idea how to maintain its health.

Four in ten have been told by a professional that their blood pressure or cholesterol levels were or are too high and a quarter of those in their 50s were already on statins.

GP Dr Sarah Brewer said: 'Between six and seven million people in the UK are now on statins and many because of poor lifestyle choices.

Millions do not know what the correct height to weight ration is, which forms the basis for BMI

'If you are on a statin it's a good idea to take both ubiquinol and vitamin D alongside the statin to support your heart health as statins lower blood levels of these important nutrients.

'And if you are on a statin, treat it as a wake-up call that you have important heart disease risk factors.

'Don't continue eating and doing what you were before – follow your doctor's diet and lifestyle advice to make potentially life-saving changes now, before it's too late.'

Only one in five who are on a statin went on to make big changes to their lifestyle, although another 63 per cent made small changes.

However, despite the warning, 14 per cent just carried as they were.

Dr Brewer said: 'Reaching any age milestone is a good time to take stock and ensure that your future years remain as healthy and active as possible.

'If you haven't had a thorough medical check-up in the previous five years, it's a good idea to ask what screening is available from your doctor – even if you feel well.

'Having a high blood pressure or a cholesterol imbalance doesn't cause symptoms as they slowly damage your circulation, so get them checked.'