Hello, Welcome to Healthcare Magic. I have read your question fully and understand your concerns. I guess you are from UK and the value of 9.3 that you are speaking about is your Total Cholesterol level. I am unsure of your ECG report as you have not mentioned it. Total cholesterol level in blood normally should be less than 5. A patient having a total cholesterol value of more than 5 is said to be having Hypercholesterolemia (in simple words it means, that person is having high cholesterol levels). Hypercholesterolemia is not common in mid-thirties but is not rare either. Elevated/high cholesterol could occur if the person smokes, is overweight, has diabetes, has high blood pressure, having sedentary lifestyle etc. In some patients it is genetic. High cholesterol levels are harmful in the long run as it can form deposits in the blood vessels which ultimately block the blood vessels causing heart attacks, strokes etc. Treatment is by reducing the amount of saturated fat consumed (present in almost all the fats derived from animals – cheese, butter, egg etc.). Avoid high fatty and high sugar content food. Increased sugar content can lead to increased levels of Triglycerides (which are another form of bad cholesterol). Consume plenty of vegetables, fruits, whole grains, lean meat from chicken, fish, white of the egg etc. Continue going to the gym, you need to exercise at least 45 min-1 hour every day. This will help you to maintain your optimum weight and will help to increase your HDL (which is your good cholesterol) You may also need to be prescribed on cholesterol lowering medication called Statins (simvastatin, atorvastatin, rosuvastatin etc.) if your cholesterol levels are still high.This will lower your LDL cholesterol (a type of bad cholesterol). Majority of people tolerate these tablets well at low doses. An additional tablet called Ezetimibe would be prescribed if the statins are not appropriately lowering the cholesterol levels. I hope this answer has helped you. Thank you Regards Dr Sunita Sayammagaru