From my reading I don’t think it is possible, but I’m open to learning how one can achieve a zero carbohydrate diet using only plant foods. @Resonosity@lemmy.dbzer0.com has graciously offered to look into the matter.

Motivation - Why zero carb matters:

• Carbohydrates end up in the blood stream as glucose
• blood glucose is a direct driver of insulin
• persistently elevated insulin is a serious health concern
• cancers can only metabolize glucose, and cannot perform oxidative phosphorylation - i.e. they only run on glucose, so carbohydrates feed cancers.

why chronic hyperinsulinemia is bad:

• type 2 diabetes
• high blood pressure
• atherosclerosis
• pcos
• visceral fat
• ectopic fat (i.e. snoring)

Functional differences between pbf and abf:

• plant sterols interfere with human cholesterol signaling, we are made of cholesterol, this leads to higher inflammation and lower ldl (that is actually a bad thing)
• lectins and inflammation - most pbf have lectins inside of them, these lectins bind to cells throughout the body which leads to autoimmune responses (from mild inflammation, to full anaphylactic shock)

nice to have’s on a zero carb diet:

• local food that doesn’t have to be shipped around the world
• regenerative agriculture, there is no top soil without ruminants
• farming without external inputs like industrial fertilizer
• food without pesticide residue