1. Durian can cause weight gain With an average 1 kg sized durian having close to 1,350 calories, eating one durian can rack up as much as 68 per cent per cent of the daily 2,000 calories recommended for an average adult! One seed durian (about 40 g) has 54 calories 2. Durian is rich in nutrients Durian is naturally rich in potassium, dietary fibre, iron, vitamin C, and vitamin B complex. The king of fruits is thus excellent for improving muscle strength and blood pressure, bowel movements and skin health. It also supports the nervous and immune systems, and enhances red blood cell formation