This article states that gut disturbance in early infancy/lifelong gut disturbance (the language is kinda sloppy) can trigger lifelong depression and anxiety.
This doesn't surprise me, but most of the rest of the article does.
The rat-botherers who did the study presume it's all about the vagus nerve. Recently, a deliciously expensive procedure which stimulates the vagus has been found to alleviate some depression. It's good to know that.
It's good to keep a couple other things firmly in mind first, though:
- Serotonin is produced in the small intestine, as well as the brain. It helps to digest protein. It also plays a role in immune signaling. Think that could possibly be related, either to depression or to inflamed gut syndromes? H'mmm...
- My first thought: get right on top of infant digestive problems. That means getting serious about both prevention and cure.
Oddly, that idea wasn't even mentioned, even though prevention is infinitely better than trying to manage a lifelong downer like IBS or depression -- let alone both!
Prevention is simple in concept, but inexcusably difficult in our current system. With babies, it's easy: get dead-serious about breastfeeding. Where that's not possible, put aside formulas at the first sign of allergy. Don't switch between cow and soy milk, two of the most allergenic infant proteins on the planet; milk more goats and camels. Go to a breastmilk-bank. Find your local midwives because they are much better with the idea that birth is only the beginning of a much longer life, and they should know how to figure this out. If they don't, they can tell you who else to call.
And punctual treatment for troublesome insides -- with the least invasive meds. Interfere with their little regulatory systems as little as possible, but take care of the problem. For indigestion, chamomile and calcium carbonate are much better than h2-inhibitors (Zantac, Prilosec and the like.) Chamomile also soothes the mind and settles the emotions, so the kid can relax.
Try elimination diets to screen for allergies. Sadly, wheat, eggs, cow dairy, soy, and corn are common allergens which affect the developing gut -- and the developing skin and brain, because their little bodies never got the memo that all of these systems are supposed to be separate from each other.
Google those terms, discuss them with your midwife/pediatrician/nurse practitioner, and take care of the problem at its source.
You don't want more depressed people in the world. There are better things to do with infants than let their guts screw up a good life, handing them into the craps-shooting care of multiple pharmaceuticals and invasive procedures.
When I get on the CPU, I'll set up more links for my factual statements. This is it from the iPhone.