If you're basing it off the tests alone, I would argue there to be no real benefit from taking your wife's stool. In fact, I would argue your gut has a higher chance of balancing itself out from diet alone than your wife's gut, simply because it has higher amounts of the ecosystem-balancing microbes.
In my experience, diet alone almost never fixes anything on its own. It only is a stopgap until you can fill in the gaps in your microbiome from a donor. Now, it's certainly possible to acquire
bad dietary habits from dealing for years with an out-of-whack gut, that need to be corrected once the microbiome is restored to keep from perpetuating problems once the gut is fixed. For instance, at some point I started eating way too much protein for my gut and it caused problems that only now are starting to get fixed, since my microbiome got better to the point where the excessive protein intake got "unmasked" as the cause of these problems once others were solved.
I don't believe that anyone knows what microbes are "ecosystem-balancing" well enough to say that someone has "more ecosystem-balancing microbes" than another person.
The questionnaire linked to on this website is better than the questionnaires used by others. Some of the questions on there require you to explain things in detail. Therefore, what is "good enough" for you does not necessarily mean it is good enough for those of us who understand the reasoning behind the questionnaire.
If sleeping better and less stressed or anxious is your only complaint, FMT should not be on your mind.
Actually, there have been many times when neuropsychiatric issues, including severe insomnia, depersonalization, etc. were the most acute sign of a dysregulated microbiome, and the ones to most dramatically improve post-FMT. I did also have food reactions, diarrhea, or more lately gut pain, though the pain started very late in the game and before my first "miracle" FMT it was completely absent.
It's also important to clarify that there are two quite different definitions of "safety". One of them, which is the one used by most FMT researchers, is stool not having acute pathogens that might put you in the hospital or even kill you. Things like C. diff, cholera, HIV, hepatitis B, etc. Your wife's stool, according to the GI-MAP, doesn't have these. The kind of overgrowths she has (and you have) are not ones that an ordinary doctor, one who isn't specifically focused on SIBO, would see it medically necessary to treat immediately by any means necessary, at least not in the gut (Pseudomonas
is that kind of bug when it's in the lungs or the blood, for instance, and Staph aureus is when it's in an abscess). This kind of safety is not
that hard to find.
The OTHER definition of "safety" is "won't make your dysbiosis, and whatever condition you have that's caused by it, worse". This kind of safety is much more difficult to find, and Michael knows of cases where even donors at a one-in-a-million level of health by all criteria he knows about still made recipients worse. So nobody can prove beyond a doubt that any donor is "safe" in this second sense, and several donors I have tried were "unsafe" in this regard. However, in my personal experience, the damage from this kind of donor can be corrected by using a better donor at a later time.
Also another thing worth mentioning, given my experience with oral transplants so far... it might be that you're surprised with how
little using your wife's stool would do given that you're already presumably quite intimate and sharing microbes other ways (not to mention also sharing living space and diet). It's certainly not
impossible, there are husband/wife pairs where one cured the other's bipolar for instance using stool, that obviously didn't get accomplished otherwise. But if you were to try your wife and basically nothing happened, it doesn't mean that using a stranger with all other methods the same that you
wouldn't get a benefit.
