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The wikipedia for curcumin suggests that it is not bioavailable. The results of this study are attributed to the supplement Theracurmin, which is a bioavailable form of curcumin. So maybe don't bother increasing your turmeric intake based on this study.

Lots of people won't realize that though, and by the time this research gets through the news cycle people will be buying turmeric in bulk. Good time to buy stocks in turmeric producers?

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There isn't very much curcumin in turmeric. About 2% by weight. It would take 4.5grams of dried turmeric to get the same dose from the study. Admittedly it doesn't talk about bioavailability of turmeric powder.

Sorry to leave two comments in the same thread, but while I’m here... A tablespoon of turmeric weighs about 8 grams, so I don’t see why 4.5 would be an unrealistic amount to consume per day.

Coffee is only about 1.8% caffeine by weight, but it gets the job done.

Nobody eats a tablespoon of turmeric! We usually use 1/4 teaspoon for a 4 person meal. Source: I'm Indian.

Combining curcumin with piperine (from black pepper) increases curcumin’s bioavailability by 2000%, something many studies on curcumin fail to take into account. Cultures with a history of turmeric consumption often combine it with black pepper. https://www.ncbi.nlm.nih.gov/m/pubmed/9619120/

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