Albert Barnes Commentary Psalms 107:18

"Their soul abhorreth all manner of food; And they draw near unto the gates of death." — Psalms 107:18 (ASV)

Their soul abhorreth all manner of meat — All food; all that is to be eaten. The word rendered “abhorreth” is a word which is used with reference to anything that is abominable or loathsome; that from which we turn away with disgust. The language is expressive of sickness, when we loathe all food.

And they draw near unto the gates of death — They are sick and are ready to die. The reference is to the underworld — the world where the dead are supposed to dwell. This is represented here as a city which is entered through gates. See the notes at (Psalms 9:13).