Fresh potato juice [mixed with some carrot juice for the taste] has been used since ages for gastric[stomach] problems like ulcers and gastritis.
I often have suggested it to patients and the results have been remarkable good.

Drink the juice of one average peeled potato in the morning, first thing,
Don’t do this longer than a month in a row!
Would this advice by gastroenterologist “lower their status”??

I was not surprised to find on the internet the following:

Abstract Crude Extract of Potato Ameliorates Clinical Impacts of Infection with Helicobacter pylori: Case Study
July 2018
Ahed J Alkhatib
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References (13)
Peptic ulcer disease is a problem of global concern and the infection of Helicobacter pylori is the main cause of this disease. Non-pharmacological approaches to improve the outcome of this disease have been reported. The purpose of this study was to report our experience in using fresh potato juice to ameliorate clinical impacts of peptic ulcer disease in three patients who were diagnosed for Helicobacter pylori. They reported that after daily use of fresh potato juice for 10 days to one month, their clinical symptoms including stomach-ache, and vomiting after meal intake disappeared and accordingly their quality of life indicators including eating what they want, non-stressful episodes have been improved. Quality of life has broad meanings that include what we are deficient in, or what we cannot do due to health alterations. Peptic ulcer impacts such quality life indicators.