This is all great news so far, but it doesn't mean we can answer the question: is hoodia harmless ? with a yes.
First of all, more studies on its safety need to be carried out. One study does not prove something is safe. In addition, it's possible that hoodia gordonii may interact negatively with prescription or over the counter meds, which the Sans Bushmen do not take at all.
Is hoodia safe during pregnancy ?
No clinical studies have been conducted to answer the question: is hoodia safe during pregnancy. Because of this, it is much better to err on the side of caution and not use hoodia during pregnancy at all. In fact, all supplements should be avoided during pregnancy without first talking to your doctor.
Something else to keep in mind is that hoodia may not be harmless to diabetics because it fools the brain into thinking you're full even when you haven't eaten.