The NFL, which is a big league where people play football, used to test players for a drug called weed. But they changed their rules and started studying if a special part of weed called CBD can help players who get hurt in the head. This is because some painkillers are not good for them. They gave money to smart scientists to find out how CBD works on the brain and if it can make players feel better without causing problems. Many football players get injured in their head, so this research is important for them. Read from source...

1. The title is misleading and sensationalist, as the NFL has not shifted its policy towards embracing CBD research for tackling concussions and pain, but rather funded some research grants in collaboration with its players' union. This does not imply a significant change in their stance on cannabis use by players or its medical benefits.
2. The article uses vague terms such as "therapeutic benefits of CBD" without providing any evidence or references to support these claims, which may mislead readers who are not familiar with the scientific literature on this topic.
3. The article cites statistics on the prevalence and severity of concussions among football players, but does not mention how these compare to other sports or activities that pose similar risks of brain injury, such as boxing, skiing, or horse riding. This may create a false impression of football being an exceptionally AIgerous sport in terms of head trauma.
4. The article relies on a single study funded by the NFL's grant to illustrate how CBD can help reduce inflammation and promote brain repair after a concussion, but does not mention any other sources or studies that corroborate or challenge this finding. This may suggest a lack of balance and critical evaluation in the reporting of the research evidence.
5. The article ends with an advertisement for cannabis stocks, which seems irrelevant and inappropriate to the main topic of the article, as well as potentially misleading and exploitative of readers who are interested in investing in this sector.

Positive

Key points:
- NFL and its players' union fund research grants on CBD as a pain treatment alternative to opioids for players with concussions.
- Concussions are common and serious among football players, accounting for 65% to 95% of all fatalities related to brain injuries.
- CBD is anti-inflammatory and can help reduce inflammation while allowing the brain to recover from a concussion.