On the one hand, it's true that these things are very important. I (as another diagnosed with ADHD) definitely do worst when I don't get proper nutrients.
But it's very, very important to remember and understand that these things don't make it go away.
I'm not saying you're suggesting that doing these things will make ADHD go away—but your comment is ambiguous as to whether that's where you're going with it, and there's definitely a lot of people who don't really believe that ADHD is a "real" disorder, many of whom give advice just like yours and end with something like "...and if you do all of this right, you'll be perfectly normal!"
So I want to both heartily endorse your recommendations (both the general "eat well," and these specific items), and also caution strongly against expecting miracle results.
I get that now, but I'm diagnosed, too, with ADHD. Maybe that's why I forgot to mention that I'm in the same, exact boat.
I'm still a foot-tapper at nearly 60, with high blood pressure putting the kaibosh on Adderall, so I do the best I can with what I can.
Those are the techniques that I have found to work for me, but I wouldn't and didn't call any of them a miracle. No, this programmer's life is non-trivially difficult for we ADHD folks, friend.
I apologize for not making that clear, but I'm certainly not downplaying ADHD's reality or difficulty after having dealt with it for over 30 years.
And taking Adderall is not without its side-effects, so I wouldn't recommend either it or pharma-grade cannabis, because I'm not a doctor, and those things are dangerous. I only recommend the safest possible path. Besides, all my recommendations actually helped me get the most out of Adderall for the few years I had my prescription.
In my experience, there are no miraculous shortcuts, but those are the ways I have found help me tamp it down, after years and years of struggling with it, which has been daily for me with my passion for programming still going strong.
But it's very, very important to remember and understand that these things don't make it go away.
I'm not saying you're suggesting that doing these things will make ADHD go away—but your comment is ambiguous as to whether that's where you're going with it, and there's definitely a lot of people who don't really believe that ADHD is a "real" disorder, many of whom give advice just like yours and end with something like "...and if you do all of this right, you'll be perfectly normal!"
So I want to both heartily endorse your recommendations (both the general "eat well," and these specific items), and also caution strongly against expecting miracle results.