Curry spice turmeric boosts memory by nearly 30%, eases depression, study finds
From the Wikipedia page on Curcumin (section Research):<p><pre><code>  In vitro, curcumin exhibits numerous interference properties which may lead to 
  misinterpretation of results.[3][6][20] Although curcumin has been assessed in 
  numerous laboratory and clinical studies, it has no medical uses established by 
  well-designed clinical research.[21] According to a 2017 review of over 120 
  studies, curcumin has not been successful in any clinical trial, leading the 
  authors to conclude that &quot;curcumin is an unstable, reactive, non-bioavailable   
  compound and, therefore, a highly improbable lead&quot;.[3]
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The study claims to have studied a bioavailable forom of curcumin, Theracumin® but it uses a very restricted interpretation of &quot;bioavailability&quot;:<p><pre><code>  The use of adjuvants that block curcumin metabolism, or nanoparticles, liposomes, 
  phospholipid complexes, and other strategies have improved its bioavailability somewhat, 
  but only as defined as increased curcumin blood levels8,64–66 with minimum effects on   
  curcumin availability to the brain.
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The study also notes its sample was small:<p><pre><code>  The relatively small sample size in this study warrants caution in interpreting 
  our results and limits their generalizability. 
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It just doesn&#x27;t sound like their results are going to stand the test of time.