Is your gut all tied up?

There is something uniquely unsettling about sending a sample of your own poo in the post — as I, and hundreds of thousands of us, have been doing lately — to work out the state of our guts. 

While I’ve never suffered from obvious problems such as IBS or bloating, since entering my 40s I’ve become more concerned about underlying issues — particularly my recurring insomnia — and taking all manner of tests. Gut health is my latest obsession. 

In addition to exacerbating sleep…