High blood pressure is known as the silent killer as most people do not feel anything until the damage is done and its too late. Check regularly, especially if you have a family history of high blood pressure as it kills by causing heart attacks, strokes and kidney failure.


In adults, this is another killer that can remain silent for a long time before it is discovered. It damages all the organs of the body, especially the eyes, heart, circulation and kidneys. Very often, it is only diagnosed when the person seeks attention for some other reason like a heart attack.

Regular exercise, keeping weight under control and avoiding refined sugar can prevent diabetes.

People who are overweight, have a family history and a sedentary lifestyle should regularly check their blood sugar regularly. Those who already have diabetes should have an annual eye, heart and blood vessels check.

  Deep venous thrombosis (DVT)

This is the formation of a blood clot in the deep veins, usually of the legs. They occur in people who are in bed for long periods, after a long journey, and in some people with abnormal blood factors and certain cancers. They can be silent or cause pain and swelling.

The big risk is for the clot to break away and lodge in the heart or lungs, a condition known as pulmonary embolism that can be fatal.

Swelling and/or pain in the lower limbs and sudden breathlessness without any obvious cause should be checked immediately.