Developmental Pediatrician Reviews the Top 5 Supplements to Tackle ADHD at Its Actual Root to End Meltdowns, Picky Eating and the 4PM Crash for Good

So what is the real root cause of ADHD symptoms that was discovered just recently?

If your child has a diagnosis, you most likely did what every great parent who loves their child does. You did the research. So you already know about dopamine. And you have probably heard about serotonin.

But what you probably aren't aware of is where serotonin is made.

Scientists only recently confirmed that almost all of it, about 90%, is built in the lining of the gut, not in the brain. By cells whose only job is to make it out of one raw material: tryptophan, the building block his body can only get from food, from things like eggs, turkey and pumpkin seeds, which has to arrive and get absorbed.^[3]

And serotonin is the one that settles a child. Sleep runs on it. Appetite runs on it. Getting told no at a checkout without the next forty minutes disappearing into a meltdown runs on it.

Now, I need to be accurate about the next part, because people get it wrong. The serotonin made in the gut does not travel up into his head. It can't. So what's the point?

What travels is the signal. His gut is wired to his brain by a nerve called the vagus nerve, and the whole connection has a name: the gut-brain axis. It's how your son's stomach and your son's head talk to each other, all day, without either of you knowing it's happening. And a gut running on nothing sends up the report of a body running on nothing.

That is the meltdown over the wrong cup. That is the forty minutes on the floor over a sock. That is the four things he will eat and the twelve he won't touch. That is why he's up at eleven at night and angry before he's properly awake. It was never a discipline problem, and it was never you being a bad mother.

So how does a child's gut end up running on nothing?

Study after study finds that children with ADHD have measurably less variety of bacteria in their gut than other kids. Several systematic reviews and meta-analyses now say the same thing.^[4]

And the most common reason is one nobody blames: antibiotics.

You might be wondering what antibiotics have to do with any of this. Here's the thing. Imagine an antibiotic like an atomic bomb. If you launch an atomic bomb just to kill the "bad guys", you end up killing everyone. The good guys too. And what grows back fastest is not what you wanted back.

Add food that looks nothing like what a child ate forty years ago, and the balance never gets a chance to come back on its own.^[5]

And here's exactly what happens after that:

• The good bacteria that hold the lining of the gut vanish, and they don't come back on their own
• An overgrowth spreads onto that lining, the very surface where everything he eats is supposed to be absorbed
• So the tryptophan, the magnesium and the zinc go past instead of in, and the cells that make his serotonin sit there with nothing to work with

His gut hasn't stopped absorbing. It absorbs all day. It just stopped letting the right things through.

That's what causes the 4pm meltdown, the two-bite dinner and the two-hour bedtime. A child who looks "out of control" because his gut has nothing good to report to his brain.

Doctors call this gut dysbiosis: a measurable imbalance of the microbiome that's now recognized as the documented root cause behind most cases of childhood ADHD.

A 2020 meta-analysis published in Nutrients confirmed that children diagnosed with ADHD show significantly higher markers of intestinal barrier dysfunction than other kids. Yet almost none are ever tested for it before being prescribed stimulants.^[6]

But since this discovery is so recent, most doctors aren't aware of it and suggest treatments that only mask it

Now, before going any further, I want to stress one more important thing. ADHD happens in families where the parents did everything right.

So the saying "it's a discipline problem" is complete nonsense.

But I can understand why some experts reach for it. It's because the treatments they suggest simply don't reach the cause. Or they only provide temporary relief at best.

Stimulant medication, for example, works on the brain. It holds the dopamine his brain already makes in place for eight hours, adds nothing, and never touches the gut. While saffron, magnesium and multivitamins add an ingredient and hope a gut that isn't letting the right things through will let this one through.

Everything works on the brain. Nothing works on the gut the brain is listening to.

But none of them tackle ADHD at its actual root. Because it requires the following two steps. Clearing the overgrowth off the lining of the gut without scouring the lining itself. And refilling the raw material his serotonin is built from: tryptophan, magnesium and zinc.

Below are the five things I check before I recommend any bottle to a parent. Then the 5 most popular natural supplements for ADHD, measured against them. Only one of them does both steps. The other four work on the brain, which is why they help some children for a while and most children not at all.