Those levels can definitely be reduced by exercise and dietary changes like avoiding sweets or sugar items,saturated fats like butter,dalda etc.
Brisk walking and exercise should solve problem.
Repeat the tests after 1 month and check.
Homeopathy medicines too will help to metabolize the cholesterol without side effects.
Many research suggests initial treatments by statins and other treatments to reduce cholestrol without lifestyle changes are not helpful plus side effects.
Even after exercise and initial homeopathy treatment levels have increased or not reducing only then consider allopathic medicines.
You are still at younger age group so exercise and lifestyle change will help.
First n foremost are you aware of the detrimental effects of high cholesterol on your body?
Cholesterol is a fat like substance which gets deposited in your arterial walls,which causes thickening of arteries,which narrows down the course of arteries reducing the amount of blood flow to the heart.This results in a heart block or heart attack.
High cholesterol levels are an alarming factor.
At your present status you need to see a cardiologist,for him to get a thorough cardiac workup done for you and also start you on medications.
Homoeopathy has had a beneficial effect to maintain the recovered phase.You can start with homoeopathy alongside,as it will help you from preventing the recurrences of such episodes in the long run.
Supplementary you can prevent saturated fats like ghee,butter,oil,cheese in diet,reduce the coconut consumption in food,proper exercise will help you bring down your cholesterol levels, incorporating flaxseeds (1 spoon daily) in your diet does have a beneficial effect.Hope you are satisfied.In case of doubts please feel free to ask me.