@Kava Drinker seems very determined to prove that kava is actually a frighteningly toxic substance compared to other things. I'm not sure if he's simply a lobbyist for pharmaceutical benzos or Magnolia bark, trying to besmirch kavas time-tested, widely accepted good name or just an obsessive worrier, deeply under the influence of confirmation bias, with a propensity to lean toward the negative.
If I wanted to use confirmation bias to prove the dangers of Magnolia bark, I could go online and pluck things out like this WebMD quote:
" What are the risks of taking magnolia?
Risks. Avoid using magnolia during pregnancy. And use caution if you take medicine to help you sleep or lessen your anxiety. Magnolia bark can also be toxic and has been linked to kidney disease and permanent kidney failure."
...or I could scare myself with
this study:
"High concentration of magnolol (chemical in magnolia bark) under serum-reduced conditions attenuates NF-kappaB-mediated signaling and induces intrinsic apoptotic pathway, thereby inducing in vitro hepatotoxicity."
...and if that were my inclination, I'd keep researching and collecting quotes and studies that mention the negatives, while ignoring everything else, until I convince myself it must be quite dangerous.
Here's a quote about GGT:
If your GGT is above 100, and your ALT is less than 80 and your ALP is less than 200
This could mean that:
- You are drinking too much alcohol
- You are taking recreational drugs such as ice or heroin
- You have diabetes
- You have a fatty liver
- You have very high levels of the blood fat called triglycerides
- You are taking certain prescribed drugs that have stimulated your liver to make more enzymes for example – barbiturates, benzodiazepines, anticonvulsants, warfarin, tricyclic antidepressants, paracetamol, pain killers or immunosuppressants.
Note: in some people it is normal for GGT levels to be as high as 120, with no liver problems being found.
So here we see benzos listed as one of the common possibilities for raised GGT too, should I assume the worst about benzo-induced hepatotoxicity now? Not to mention, benzos have their own problem, being addictive and causing dangerous withdrawals for anyone who uses them daily. It's also important to note the role diabetes can play in cases of elevated liver enzymes, especially when talking about kava studies involving Pacific Islander groups where diabetes and obesity is well known to have been on the rise for many decades, due to changes in diet and increasingly sedentary life style. Tobacco is also common in these regions and is known to raise GGT as well. Remember too, that other seemingly everyday things can raise GGT, like eating meat.
We know that kava is metabolized by the liver and will therefor have some effect on it, just like nearly everything else we consume does, to varying degrees. But raised GGT from kava, settles back down soon after cessation, without ever triggering the more liver-specific enzyme
ALT and never causing jaundice, which would be very apparent in regular kava drinkers if it were really as dangerous as you think.
The vast majority of evidence points to the fact that water extractions of noble kava, consumed alone, not in combination with other drugs/meds/herbs/alcohol is generally harmless to drinkers who have no underlying health issues or genetic mutations that affect the metabolization process.
If it hasn't been posted yet, here's a study the shows GGT quickly decreasing after kava and acknowledges that there's;
This data from the World Health Organization shows Fiji, where kava is consumed regularly and often for a long duration, to be among the worlds lowest LIVER DISEASED countries. The map used to show other kava drinking nations, but no longer does. When they did, however, they all had similarly low rates of liver disease, which should be high in these regions where it's consumed regularly, if kava and it's raised GGT were really an issue. On the other hand, they did have generally high rates of kidney disease(which Fiji still shows), but this is linked to the known rise in diabetes, obesity and other 3rd world environmental factors. The kidney disease precedes the heart disease and neither have been correlated to kava.
I don't know if the FK-B related toxicity is connected to the rise in GGT, but here are some studies that showed that supplemental doses of GSH (Glutathione, NAC, and probably milk thistle) counteract FK-B toxicity -- Also note, traditional kava preparations naturally include some amount of glutathione:
"Addition of GSH to kava extracts has been shown to reduce cytotoxicity in vitro..."
You have to understand, kava is relatively rare outside of the Pacific Islands and has hardly been properly studied, compared to things like alcohol and pharma drugs. A lot more needs to be done and we don't have much to work with. But what we do have is a long history of safe usage by humans as well as a bit of some seemingly good science that generally considers it safe. Dangerous or fatal reactions appear to be anomalous exceptions to the rule and only seem to arise when kava is combined with some other rare variable.
As with most things, it's always good to take breaks intermittently and give your body a break. If you happen to be legitimately allergic or genetically predisposed to metabolizing it improperly, then abstinence is probably your safest bet.