Cocoa flavanols contribute to faster oxygen uptake kinetics, improved blood flow...and the original Medical Express link.
I bought a three month supply of CocoaVia after reading that August article but haven't noticed any changes.
I wonder if Cocoa Pebbles counts?..................
Reminds me I need to go out and resupply my chocolate chips. I like a hand full very day. Off to Costco!
“After taking about 750 mg of cocoa flavanols daily for 8-12 weeks, the amount in CocoaVia™ Memory+, study participants experienced a 31% improvement in word recall and were able to complete a brain test an average of 21% faster.”
https://www.cocoavia.com/pages/see-the-science
You may not notice an improvement if you were already doing well, though, which would be good and could show you might benefit at a later time, but not now.
I know I posted, many years back, the MRI blood flow study, but it would take time to find. That is what sold my wife and I on it for us and her parents.