The study found that thin and obese people react differently to blood pressure medications.
People who have high blood pressure and are overweight have a better prognosis than people who have high blood pressure and are thin, scientists found.
Researchers recommend starting all patients with a class of drugs called calcium channel blockers regardless of weight.
They say diuretics are effective in obese patients but can harm thin patients and should be relegated to a third line therapy.
The authors believe their findings could change the way high blood pressure is treated.