I'm not sure if they did any research about this topic. For me, both ways are good, I was smoking marijuana 6 years after I switched to vaping with CBD oil, and I cannot tell you that is better. Both options are good for me. Also, I just tried to order the CBD gummies to deal with my insomnia, and I found this article about the best THC weed gummies https://www.kirklandreporter.com/blog/weed-gummies-5-reasons-why-everyone-needs-a-little-thc-in-their-life/, if anybody knows a good online platform where I can order them, it will be much appreciated, thank you for the reply in advance.