The fatty liver results from increased fat mobilization from adipose tissue. (merckvetmanual.com)
It is also helpful for fat mobilization purposes, so for those who are on a fat loss diet, you don't want to be missing out on this particular amino acid. (blog.fitplanapp.com)
I think it is most appropriate to borrow the words from someone far smarter and well versed on this topic here (Dr. Kevin Hall), «A logical consequence of the carbohydrate - insulin model is that decreasing the proportion of dietary carbohydrate to fat without altering protein or calories will reduce insulin secretion, increase fat mobilization from adipose tissue, and elevate oxidation of circulating free fatty acids. (sciencedrivennutrition.com)