East Bay Times

Mushroom consumptio­n facts

- Kensington resident Ed Blonz has a Ph.D. in nutrition from UC Davis. Email him at cctimes@blonz.com.

DEAR DR. BLONZ

>> What is known about the Ganoderma mushroom that gets roasted and used as a coffee substitute? I am having trouble finding out informatio­n from sources that do not benefit from its sale. I had a sample and enjoyed the flavor, and I have read about health benefits, but I want to know more about what I would be ingesting before I buy. Thank you for your help.

— G.G., Hayward

DEAR G.G. >> Definitely best to check things out in advance. A mushroom is a fungus and not considered a plant. It gets the nutrients it needs from organic matter; in essence, mushrooms live off dead plants. A number are treasured for culinary uses, while some are feared for their deadly toxins, and others are known for their psychoacti­ve effects.

Some mushrooms are studied for their medicinal properties. A number of mushroom compounds are being investigat­ed for effects on cancer when taken alone or used in conjunctio­n with more convention­al therapies. As is often the case with natural-occurring compounds, there can be variations from harvest to harvest. All this translates to plenty of unknowns about the precise identifica­tion and level of active ingredient­s and what they will do in the human body.

The beverage you mention is made from roasted Ganoderma, its full name being Ganoderma lucidum, more commonly known as the reishi mushroom. Reishi mushrooms have a long history in traditiona­l Eastern medicine and herbology. An active area of study with reishi relates to their bioactive compounds and potential benefits to the immune system.

Still, it is essential to not get ahead of the science. The compounds in mushrooms evolved to protect the mushroom’s ability to grow and propagate. They are in the mushroom to help the mushroom, not us, so they can be present in tiny amounts (although with some toxins, this is enough). Does this all change if we “extract” a specific component from a mushroom’s symphony of self-made compounds and then give it to a human at higher levels? It can be an undertakin­g with some risks, so caution is advised. (See b.link/vpxxw for a general take on mushrooms.)

I am familiar with reishi being taken as a tea or added to a coffee product; it can also be dried and used as a dietary supplement. I am not very familiar with the roasting of reishi for use as a coffee substitute. It is unclear whether and how a roasting process might affect reishi’s bioactive compounds. Could there be potential interactio­ns with health conditions, medication­s or other dietary supplement­s? If it will be used as a routine beverage, will there be an effect from chronic usage?

I realize that I am leaving you with more questions than answers, but I want you to be aware of the issues. Exercise caution. If you have ongoing health conditions and are taking meds, please run this by your health practition­er and your pharmacist and track what happens.

 ?? ON NutritioN ?? CD Blonz
ON NutritioN CD Blonz

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