There is totally validity in what Brady is saying. I know this is incredibly shocking to hear but eating cruciferous vegetables is good for you. A lot of evidence towards it is completely anecdotal but it is there and palpable. Going more into the organic, green, plant-based diet and augmenting that with fish, meat, and nuts 95% of the population will see noticeable improvement in cognitive ability in addition to look and athletic performance. Athletes especially will notice it. Inflammation reduction, gut bacteria, alkaline/acid balance, all that stuff really does work when it's applied. It legitimately upsets me when people scoff and laugh at it because the difference in performance is insane.
From my personal experience I was on a meathead a bodybuilder style macro based diet and hitting caloric numbers. I built myself to a point where I could train (hard) about six times per week. I would still be absolutely wrecked with soreness and spend about an hour a week doing myofascial release, self massage, light lifting the sore areas, etc...just to be able to hit the routine again the following week. I had an athletic competition on the horizon and my performance was plateaued. I listened to a guy who is essentially a weight cut and nutrition coach who was strongly advocating going more down the hippie type road of hyper-clean, organic foods and essentially bags of greens each day. Three weeks after having chia pudding and blueberries for breakfast, wild caught fish, quinoa, sweet potatoes, and choking down spinach, chard, and kale shakes my soreness went away, performance went through the roof, I could go ten hard sessions a week, mood went way up, cardio became infinite, skin got complimented, essentially everything went through the roof. I had to weigh 145 pounds for about ten minutes for the competition and was walking around three weeks out at 168 with single digit body fat. That's a lot of weight to suck out and not a lot of fat to do it with. The dehydration cut went swimmingly, I bounded to the scale, other guy shuffled and looked like pure death.
Clean, organic, wild food with absurd quantities of cruciferous veggies works absolutely. I know of stories where CBD oil and complete revamp of a diet significantly helped beat cancer. Is it a cure-all? No, of course not, but reducing inflammation, stabilizing hormones, and providing the body with the whole food nutrients it requires certainly does not hurt. Especially if you're some poor sack of garbage smashing down soft drinks, whatever the hell fast food is made out of, ripping butts all day, then getting pickled every night. Does proper hydration cure concussions? Nope, but being fully hydrated helps the fluid barrier in place to protect your brain from them do it's job a whole lot better. Studies have shown that even a 3% reduction in hydration can have enormous impacts on physical and mental performance. It's why most fighters IV up after weighing-in. That stuff matters when CTE is on the line. This entire narrative that Gurrero is some charlatan strikes me as being so silly.