Agave Nectar
Also known as: Agave syrup
Marketed as 'low-GI natural', actually 70–90% fructose — hardest on the liver.
At a glance
How Agave Nectar compares to table sugar on the three numbers most people actually want.
What it actually is
Agave nectar is hydrolysed inulin from the agave plant. The hydrolysis converts fibres into free fructose. Commercial agave runs 70–90% fructose — higher than even high-fructose corn syrup, which is typically 55%.
The famously low GI (≈19) is a marketing artefact. GI only measures glucose response. Fructose bypasses glucose pathways, gets routed directly to the liver, and at high doses contributes to de novo lipogenesis, NAFLD, hyperuricaemia and insulin resistance.
Agave fails the metabolic test more often than the table-sugar baseline. The 'natural' framing is misleading.
- Dissolves easily in cold drinks
- Low GI for diabetics monitoring glucose alone
- 70–90% fructose — worst class on the shelf for liver load
- Linked to insulin resistance and NAFLD at typical exposures
- 'Natural' positioning misleading — heavily processed
Regulatory status
In practice
- Cocktails (sparingly)
- NAFLD
- Insulin resistance
- Gout
'Natural' soft drinks, granola bars, plant-based yogurts
The evidence
Selected peer-reviewed sources behind the score. Open access where possible. Read our scoring methodology for how we weight evidence tiers.
Recommended swaps
Higher-scoring alternatives that perform similarly in use.
A rare sugar that tastes 70% as sweet as sucrose with ~10% the calories and a negligible — sometimes mildly suppressive — insulin response.
Steviol glycosides from Stevia rebaudiana. 200–400× sweeter than sugar, zero glycemic.
Mogrosides from Siraitia grosvenorii. 150–250× sweeter, no glycemic effect, cleaner aftertaste than stevia.