Agar-Agar vs Gelatin: which is worse?

What is Agar-Agar?

Agar-agar is a gelatinous polysaccharide extracted from red algae (primarily Gelidium and Gracilaria species). Unlike gelatin, it sets at room temperature and does not melt until heated to approximately 85°C. It is widely used in Asian cuisine and as a vegan gelatin substitute globally. It also functions as a growth medium in microbiology.

What is Gelatin?

Gelatin is a colorless, flavorless protein obtained by partial hydrolysis of collagen from animal sources — typically pig skin (most common), cattle bones, or fish skins. It is a thermo-reversible gelling agent, melting at body temperature (~37°C), which gives products like gummy bears and Jell-O their characteristic 'melt in mouth' property.

Documented risks

Agar-Agar: Generally recognized as safe with no identified health risks at food use levels. Agar is not significantly digested and acts as a bulk dietary fiber. Very large amounts can cause constipation or intestinal obstruction if consumed without adequate water. EFSA confirmed its safety in 2016.

Gelatin: Considered safe at food use levels. Gelatin is not suitable for vegans, vegetarians, or those observing kosher or halal dietary laws when derived from pork. Bovine-derived gelatin raised BSE (bovine spongiform encephalopathy / mad cow disease) concerns in the 1990s; regulatory measures including source and processing controls have since been implemented. Current food-grade gelatin from approved sources presents no identified health risk.