请教一句话的翻译（药学）

A solid oral dosage form of KATP channel opener can be used to administer a therapeutically effective dose of KATP channel opener to an overweight or obesity prone individual in need thereof to maintain weight, as it is preferable to maintain weight in an obese individual once some weight loss has occurred when the alternative is to regain weight.

关键是as it is preferable 之后的部分。

as it is preferable to maintain weight in an obese individual once some weight loss has occurred when the alternative is to regain weight.

感觉这句话要意译才行。试译如下：
因为肥胖者的体重有一些减轻后优选的做法是加以保持，否则结果就是体重再次增高。