Short answer: The 2026 research confirms that repeated head impacts, including hits too small to cause a diagnosed concussion, are the mechanism behind chronic traumatic encephalopathy (CTE). No headgear prevents concussions or CTE. What headgear can do is reduce the force of the impacts a player takes, and the Virginia Tech Helmet Lab's ratings tell you which products do that best. That's the honest case for wearing 5-star rated headgear in flag football.
What the new research says
Boston University, September 2026: what CTE looks like during life
Researchers at the Boston University CTE Center published the largest study to date linking cognitive testing during life to CTE confirmed after death. They studied 33 former NFL players who completed standardized neuropsychological testing (average age 63) and were later diagnosed with CTE at autopsy. Memory problems were the most common finding, affecting 63% of participants, followed by executive function (52%), language (41%), and attention (26%). More advanced CTE meant worse memory scores. The results appeared in JAMA Network Open. Read BU's summary →
Neurobiology of Disease, June 2026: how repeated hits become disease
A review in Neurobiology of Disease pulls together epidemiology, neuropathology, and clinical studies to map the path from repetitive concussive and subconcussive brain injury to CTE. The short version: each impact sets off secondary cascades in the brain - inflammation, metabolic stress, damage to nerve fibers - and over time those promote the abnormal tau protein buildup that defines CTE. The authors describe it as a continuum from exposure to disease. Read the abstract on PubMed →
What this does and doesn't mean for flag football
Both studies are about tackle football and years of repeated hits. Flag football is a different sport with far less head contact, and nobody should read this research as saying flag players are on the same path.
But the mechanism matters. The review's key point is that it isn't just diagnosed concussions - it's the accumulation of smaller impacts. Flag football has those. Researchers reviewing nearly a decade of emergency department records identified more than 22,600 injuries among female flag football players, with close to one in four involving the head, face, or neck. Girls flag football is now the fastest-growing high school sport in the country, so more athletes are taking those hits than ever.
If repeated impacts are the problem, reducing the force of each one is the reasonable response. That's what soft-shell headgear is for.
What headgear can and can't do
No headgear prevents concussions, and no headgear prevents CTE. Any company claiming otherwise is overselling. What the Virginia Tech Helmet Lab measures is how much a product reduces the linear and rotational head accelerations that are correlated with concussion risk, across 36 impacts drawn from real flag football play. A 5-star product reduced those accelerations more than a 3-star product did. That's a real, measurable difference, and it's the only independent, public comparison of flag football headgear that exists. How the ratings work →
Where CLOUD Athletic headgear ranks
On the lab's published flag football headgear ratings, CLOUD Halo is ranked #1 with a 5-star rating and CLOUD Halo Lite is ranked #3, also 5-star. Both are soft-shell designs covering the forehead, temples, and back of the head. You can verify both on the lab's site.
The rest of the picture
- Coaching. Teaching athletes to pull flags without leading with the head removes impacts before any gear is involved.
- Sitting out. A player who takes a hit and seems off should sit. Headgear doesn't change that.
- Fit. Headgear that slides doesn't cover what it's supposed to. Fit guide →
Frequently asked questions
Does flag football cause CTE?
There is no research showing that. The 2026 studies are about tackle football players with years of repeated hits. Flag football has far less head contact, but it isn't zero, which is why protection is worth considering.
Does headgear prevent CTE?
No. Headgear reduces the force of individual impacts. It does not eliminate them and it does not prevent concussions or CTE.
What is the best-rated flag football headgear?
On the Virginia Tech Helmet Lab's flag football headgear ratings, CLOUD Halo is ranked #1 with a 5-star rating and CLOUD Halo Lite is ranked #3, also 5-star.
What are the sources for this article?
Boston University Chobanian & Avedisian School of Medicine, "Boston University Study Provides First Window into Cognitive Impairments People Experience from Autopsy-Proven CTE," September 2, 2026 (study published in JAMA Network Open); and Jun S, Arrasmith CM, Liaudanskaya V, "Chronic traumatic encephalopathy: A devastating legacy of repetitive concussion," Neurobiology of Disease, September 2026 (PMID 42341996).
Shop 5-star rated CLOUD headgear →
CLOUD Athletic is not affiliated with, sponsored by, or endorsed by Virginia Tech, the Virginia Tech Helmet Lab, Boston University, or the authors of the studies cited. Ratings referenced are published independently by the lab and can be verified at its website. No protective equipment can prevent all injuries, including concussions or CTE. This article is not medical advice.