I take a low-dose Acidophilus-Lactobacillus capsule three times a day with a small meal and believe it has helped but I've heard others say it didn't help them so I guess it's an individual thing.
Gastroparesis can affect the whole body system but there doesn't seem to be a clear cause other than post-operative issues or diabetes (which affects the nerves including those in the GI tract and/or the vagus nerve.) But there are treatments for GP like diet management and short-term medication and many times they do help
I, too, experienced lousy follow-up and poor dietary advice after inpatient tests showed gastroparesis so had to research it myself with the help of my PCP and my nephrologist (I also have renal disease, diabetes, CHF, COPD, and other chronic conditions.)
I remember how scared I was when I couldn't eat and got so weak I couldn't function and landed in the ER about five times before they took it seriously and admitted me, gave me fluids and ran tests then put me on a clear liquid diet for a couple of days. The GI peeps followed up by handing me a diet which would have worsened my renal function and diabetes! No, thank you!
Too bad we have to be our own advocates when we feel ill and can't get appropriate medical help in a timely manner, if at all, but Google might be your best friend as long as you use trusted websites like the Cleveland Clinic or Mayo, etc.
Sending you healing thoughts and best wishes.
My dad used to say, "your a fool to be your own lawyer, and your own doctor." well, I'm not very good as my own lawyer, but after like 15 emergency docs, a dozen or more scans, tests, ultrasounds, five surgeons, four GI experts, etc. and they all missed what I kept telling them from day one...denied it, said it didn't exist, yet found and verified. I read all my own labs, all my own medical records, and don't just go and do one more CT scan, that will show nothing, when six have already been ran, and it's a waste of time and money...but the right surgeon, took his fingertips and put them in my tummy where I told everyone that I had a hernia, that "didn't exist" and he says, "oh, very rare, you have a spigelian hernia, gotta get that fixed, it can pinch your bowel..." no, really!? LOL ;o)