Candida tests are useless. Whether or not he is suffering from candida related illness depends on his state of immunity. Most people test positive for candida, but most are not sick from it. Olive leaf extract will kill candida. not all of it all at once, but it will decrease it. If someone is not on a low carb diet though then the candida may overgrow. If your husband is not ill from candida, then having him take olive leaf extract won't help you. You should take olive leaf extract.