Starfruit and Cucumber actually beneficial to reduce high blood pressure / cholesterol . However, because it is very acidic, preferably eaten at night when the stomach is full. It's very risky in the morning , because the stomach is empty and could cause the ulcer disease .
To lower cholesterol / high blood pressure, eat the starfruit just 1 piece per day . It can be sliced and eaten raw. But it feels very acidic. You could reduce the acidity by boiling the starfruit in a glass of water.
You could eat slice and eat the starfruit with rice . It can also be mixed with hot sauce if you have a strong stomach . You could drink the water.