3,000 years is hardly a "fad" no? The anxiolytic effects of kava have been proven in clinical trials. As have its effects as an anti-inflammatpry, and its effects in treating urinary tract problems. And its use as an anaesthetic. The cancer stuff is not proven as yet but the circumstantial evidence is very strong. You don't have to spend long with pub med to see all this. Vincent Lebot is not a fraud, and what he writes is very well documented and supported.
I assure you I am not faking weight loss or not drinking. I haven't had a drop of alcohol in months, and I have lost 1/8th of my body weight since the start of the year. Before this for years I would run 5 marathons a year and not lose weight. And I have had no enthesitis since drinking kava (and no iritis), when every spring for the past few decades I have two or three flare ups. I had dandruff for decades and now have none.
The medical literature on kava is quite extensive, it's not a placebo, and it isn't fake. What was a fad, and a bad one, was the wave of trendy kava use in Europe in the 90's that lead to people using stems to make a quick buck and making people sick and getting kava banned. And there is always the risk that can happen again and there are some signs that may be happening. But kava itself is innocent. It's the people that were the fakes, the fads, the pretenders. The kava is real.
Of course, if one does not suffer from inflammation, the anti-inflammatory effect won't make a difference. In my case, my overweight was a function of inflammation, so as an anti-inflammatory, kava has essentially been doing a systemic reset on my body, returning my body, for better or worse, to where it it be if I didn't have the inflammatory condition I've had for the past 50 years.