There are more studies treating GERD successfully with standard clinic VLC diets,
https://www.dietdoctor.com/low-carb...-reflux-disease
but there is one recent study where the type of fats were somewhat monitored but still high (1/3 saturated) and this LCHF study diet successfully treated GERD in obese women.
Dietary carbohydrate intake, insulin resistance and gastro‐oesophageal reflux disease: a pilot study in European‐ and African‐American obese women
https://onlinelibrary.wiley.com/doi....1111/apt.13784
Since most foods have a mix of all three fats, (steak is high in mono-unsaturated fats along with the saturated) fats would seem difficult to control, but I'll take that study at face value.
The earlier small study in 2006 with Westman and Yancy at Duke, and a GI fellow at UNC,
https://www.ncbi.nlm.nih.gov/pubmed/16871438
treated the trial subjects with the Duke clinic diet. Can't open the study but believe it used the standard clinic instructions, no restrictions on type of fats in protein foods, but some limits on dairy fats.
https://www.dietdoctor.com/se/wp-co...starch_diet.pdf
Adding personal stories heard over the past eight years at the local support group meeting...relief from GERD is an often cited benefit of the clinic diet, even before patients get to goal weight (though that helps too). Following what Emmie said, my DH, who is rail thin, cured his GERD by eliminating all Wheat and grains. He still eats sugar and dairy with ice cream (because he can... darn him) but wheat desserts will trigger it. He also stopped snoring
Here's one previous thread on GERD and how stomach acid production effects it (not what most think).
http://forum.lowcarber.org/showthread.php?t=461849 Use advanced search button to find others.
Hope you feel better
My DH was on a PPI for nine years...And cured it with a wheat free diet.