Guacamole: the avocado science and the salt you add

The health research on this page fed people avocado. None of it fed them guacamole, and the two food tables that describe the dip itself describe two different dips. Guacamole as Americans reported eating it carries 344 mg of sodium per 100 g. The British homemade recipe carries 5 mg. That 69-fold gap between two single records mostly reflects added salt, while the calories stay close, 155 against 128. One tablespoon is 15 g, about 23 kcal and 52 mg of sodium, and a single-serve tub is 70 g. The clearest finding is about absorption. In two crossover studies of 12 adults each, fresh Hass avocado carrying 23 g of fat, added to a meal, raised beta-carotene absorption 2.4-fold from tomato sauce and 6.6-fold from raw carrots. The trials are small, and a pooled analysis of 12 randomised trials points the same way for unsaturated fat in general. Cholesterol is where the evidence argues with itself. Ten trials in 229 people found LDL down 16.5 mg/dL with avocado in the diet. A later pooling of 18 studies in 481 people found HDL up 2.84 mg/dL and no change in LDL, and no study in it counted a heart attack. The two pooled analyses disagree on LDL, and their abstracts do not say why. Until someone explains the gap, the LDL question is open.

How much is actually in it

• US survey guacamole carries 344 mg sodium per 100 g against 5 mg in the UK homemade recipe, a 69-fold gap that mostly reflects added salt, with 155 vs 128 kcal. — Guacamole, NFS (FNDDS 2709307) vs Guacamole, homemade (CoFID 17-797) (n = 1 record each) Evidence E source
  Per 100 g US vs UK: sodium 344 vs 5 mg, energy 155 vs 128 kcal, fat 14.18 vs 12.7 g, potassium 472 vs 364 mg

What a real portion looks like

• In US national survey data from 19,086 people, only 5.8% ate avocado or guacamole on a given day, rising to 9.1% among Hispanic people, and consumers ate 67 g a day on average. — 19,086 NHANES participants aged 1 year and over, 2017-2020 and 2021-2023, day-1 24-h recall (n = 19086) Evidence C source
  Prevalence 5.8% overall, 6.9% women, 9.1% Hispanic, mean 67.0 g/day among consumers
• One tablespoon of guacamole is 15 g in the US survey database, about 23 kcal and 52 mg sodium, and a single-serve container is 70 g. — Guacamole, NFS (FNDDS 2709307) portions Evidence E source
  1 tbsp 15 g: 23.2 kcal, 51.6 mg sodium, 2.1 g fat, 1.0 g fibre, container 70 g

What your body absorbs

• In two crossover trials with 12 adults each, adding fresh Hass avocado (23 g fat) to a meal raised beta-carotene absorption 2.4-fold from tomato sauce and 6.6-fold from raw carrots. — 2 sets of 12 healthy men and women, single meals with or without avocado, 12 h blood sampling (n = 24) Evidence B source
  Beta-carotene absorption x2.4 (tomato sauce), x6.6 (carrots), alpha-carotene x4.8, conversion to vitamin A x4.6 and x12.6
• A meta-analysis of 12 randomised trials found carotenoids are absorbed far better with unsaturated fats (SMD 0.90) than with saturated fats (SMD 0.27). — 12 randomised controlled trials and 27 in vitro studies of carotenoid-rich foods eaten with different fats (n = 12 RCTs) Evidence A source
  Unsaturated fat SMD 0.90 (95% CI 0.69-1.11) vs saturated fat SMD 0.27 (95% CI 0.08-0.47); bioavailability rose with fat quantity
• In 16 adults eating the same carotenoid-rich salad with 28 g of fat, olive oil raised total carotenoid absorption 55.2% above coconut oil, and emulsified fat 40.0% above unemulsified fat. — 16 adults, randomised crossover, identical salad with 28 g of olive or coconut oil, emulsified or not, 10-h plasma sampling (n = 16) Evidence B source
  Positive iAUC 1-10 h of total carotenoids +55.2%, alpha-carotene +110.8%, lycopene +45.8% with olive vs coconut oil; emulsified +40.0%

What it does to your health

• In a meta-analysis of 18 avocado studies with 481 people, eating avocado raised HDL cholesterol by 2.84 mg/dL but did not change total or LDL cholesterol, triglycerides or body weight, and no study measured heart attacks. — 18 studies, 481 adults, avocado intake vs no intake or controls (n = 481) Evidence A source
  HDL +2.84 mg/dL (95% CI 0.18 to 5.49), no significant change in TC, LDL-C, TG, body weight
• Across 10 randomised trials with 229 participants, avocado consumption reduced total cholesterol by 18.8 mg/dL, LDL cholesterol by 16.5 mg/dL and triglycerides by 27.2 mg/dL. — 229 adults in 10 randomised clinical trials to February 2015, avocado consumption in the diet (n = 229) Evidence A source
  TC -18.80 mg/dL (95% CI -24.56 to -13.05); LDL-C -16.50 (95% CI -22.91 to -10.10); TG -27.20 (95% CI -44.41 to -9.99); HDL unchanged

Safety, limits and interactions

• According to FDA sampling up to October 2019, 15 of 887 processed avocado or guacamole samples (1.7%) tested positive for Listeria monocytogenes and 2 for Salmonella. — 887 processed avocado or guacamole samples (777 domestic, 110 import), US (n = 887) Evidence E source
  Listeria 15/887, Salmonella 2/887
• A US review of Listeria monocytogenes clusters found one cluster likely linked to avocados, where case patients had 8.5 times higher odds of having eaten avocado than people with sporadic illness. — 15 US Listeria clusters containing at least one avocado isolate, 5 assessable, national database (n = 15 clusters) Evidence C source
  One likely, two possible, two limited-evidence links; likely cluster OR 8.5 (95% CI 1.5 to 86.5)

Who this works differently for

• In 2272 Finnish mother-child pairs, women who ate any avocado during pregnancy had 43.6% lower odds of reporting a food allergy in their child at 12 months, with no association for eczema, wheeze or rhinitis. — 2272 pregnancies in the Kuopio Birth Cohort, avocado intake by online food-frequency questionnaire in trimesters 1 and 3 (n = 2272) Evidence C source
  Food allergy odds -43.6% (adjusted); no significant association for the other three allergic outcomes

What is still unknown

• Among 192,651 adults in the Multiethnic Cohort, eating avocado or guacamole at least once a week was not associated with colorectal cancer risk, and only 10.5% ate it that often. — 192,651 participants of the Multiethnic Cohort Study, food frequency questionnaire, one serving = half an avocado or half a cup (n = 192651) Evidence C source
  No significant association overall, by subsite or by ethnicity (all p for trend >= 0.06)

The bottom line

The salt is the recipe. A homemade bowl is low in sodium only if you add little salt, and a tablespoon of the survey version already carries 52 mg. The 5 mg figure is one UK homemade recipe set against one US survey record, a single entry on each side, so the gap describes those two recipes and is not a rule about homemade food. The fat in the bowl points the same way as the trials on fat and carotenoids. Across 12 randomised trials, carotenoids were absorbed far better with unsaturated fats than with saturated ones, and in 16 adults eating the same salad, olive oil beat coconut oil by 55.2 percent. Nobody tested guacamole itself, so treat this as the direction the evidence points for the tomato and onion you mash into it. On cholesterol, do not expect the dip to fix anything by itself. The result that looks best, LDL down 16.5 mg/dL, came from one pooled analysis. A later one found no LDL change, and none of the trials followed anyone long enough to count a heart attack. On bowel cancer the data we have is reassuring and limited. Among 192,651 adults, eating avocado or guacamole at least weekly was not linked to colorectal cancer risk, and only 10.5 percent ate it that often. That is an observational study, so it can show no link was found, and it cannot prove there is none. Pregnancy has one observational finding, and it is the kind to read slowly. In 2272 Finnish mothers, eating any avocado in pregnancy went with 43.6 percent lower odds of the parent reporting a food allergy in the child at 12 months, with no link to eczema, wheeze or rhinitis. It comes from questionnaires. Nobody has run a trial to see whether the avocado caused it, and until someone does, it is a reason for curiosity and nothing more. Read it together with the one safety finding we do have, which is about the processed tub. FDA found Listeria monocytogenes in 15 of 887 processed avocado and guacamole samples, 1.7 percent, and Salmonella in 2. One US Listeria cluster was judged likely linked to avocado, with a confidence interval so wide, 1.5 to 86.5, that the size of the risk stays unknown even where the link is accepted. Those figures are for processed products. Nobody sampled the bowl you make at home, so we cannot say it is safer, only that it was not tested. Our cards say nothing about who that Listeria figure matters most for, nothing about allergy to avocado itself, and nothing about interactions with any medicine. If you are pregnant or have a reason to worry about foodborne infection, that is a question for the person treating you, and this page cannot answer it. Silence in our corpus is a gap in our reading, and it should never be read as safety.

Sources

1. guac-b3-07 · reference dataset
   Guacamole, NFS (FNDDS 2709307) - Energy 155 KCAL - Sodium 344 MG - Potassium 472 MG - Total lipid 14.18 G - Fiber 6.5 G | Guacamole, homemade (CoFID 17-797) - Energy 128 kcal - Sodium 5 mg - Potassium 364 mg - Fat 12.7 g
   USDA FNDDS food 2709307 and CoFID 2021 (Public Health England, OGL v3.0) code 17-797 · checked 2026-09-23
2. guac-b3-05 · cross-sectional survey
   RESULTS: 5.8% of participants consumed avocado. Prevalence was highest among women (6.9%), adults aged 19-50 years (7.4%), and Hispanic individuals (9.1%). Among consumers, the mean intake was 67.0 g/day.
   Nutrients, 2026 · checked 2026-09-23
3. guac-b3-08 · reference dataset
   Guacamole, NFS (FNDDS 2709307) - 1 tablespoon 15 g 23.2 KCAL - Sodium 51.6 MG - 1 individual container 70 g
   USDA FNDDS food 2709307 portions · checked 2026-09-23
4. guac-b3-03 · RCT (crossover)
   Consumption of lipid-rich avocado enhanced the absorption of β-carotene from study 1 by 2.4-fold (P < 0.0001). In study 2, the absorption of β-carotene and α-carotene increased by 6.6- and 4.8-fold, respectively (P < 0.0001 for both).
   J Nutr, 2014 · checked 2026-09-23
5. guac-c2-01 · meta-analysis of RCTs
   Moreover, fats rich in unsaturated fatty acids resulted in greater improvement in carotenoid bioavailability (SMD 0.90; 95%CI, 0.69-1.11) as compared with fats rich in saturated fatty acids (SMD 0.27; 95%CI, 0.08-0.47).
   Nutr Rev, 2022 · checked 2026-09-23
6. guac-c2-02 · RCT
   Similarly, the positive iAUC1-10h of TC, α-carotene, and lycopene were 55.2%, 110.8%, and 45.8%, respectively, higher with olive oil than with coconut oil. Emulsified fat induced 40.0% greater positive iAUC1-10h of TC than nonemulsified fat.
   Am J Clin Nutr, 2023 · checked 2026-09-23
7. guac-b3-01 · meta-analysis (mostly RCTs)
   In 7 studies, avocado intake significantly increased HDL cholesterol (summary net change: 2.84 mg/dL; 95% CI: 0.18, 5.49 mg/dL), with significant heterogeneity...There was no significant difference between avocado intake and the control for the outcomes of serum total cholesterol (TC), LDL cholesterol, triglycerides (TGs)
   Am J Clin Nutr, 2018 · checked 2026-09-23
8. guac-c2-03 · meta-analysis of RCTs
   Ten unique studies (n = 229) were included. Avocado consumption significantly reduced TC, LDL-C, and TG by -18.80 mg/dL (95% confidence interval [CI], -24.56 to -13.05; I(2), 46.9%), -16.50 mg/dL (95% CI, -22.91 to -10.10; I(2), 72.5%), -27.20 mg/dL (95% CI, -44.41 to -9.99; I(2), 91.1%) respectively.
   J Clin Lipidol, 2016 · checked 2026-09-23
9. guac-b3-06 · agency surveillance report
   As of October 15, 2019, the FDA has tested 887 processed avocado or guacamole samples (777 domestic, 110 import). Of the processed avocado or guacamole samples, 15 tested positive for Listeria monocytogenes (13 domestic, 2 import), and two tested positive for Salmonella (both domestic samples).
   FDA, Sampling fresh herbs, guacamole and processed avocado (constituent update) · checked 2026-09-23
10. guac-c2-07 · retrospective observational
    avocado consumption was significantly higher among case patients in the cluster compared with sporadic illnesses (odds ratio, 8.5; 95% confidence interval, 1.5 to 86.5)
    J Food Prot, 2021 · checked 2026-09-23
11. guac-c2-05 · cohort
    Compared to avocado non-consumers (during pregnancy), avocado consumers (during pregnancy) had 43.6% lower odds of reporting food allergy among their children at the 12-month follow-up questionnaire while adjusted for relevant covariates.
    Pediatr Res, 2026 · checked 2026-09-23
12. guac-b3-04 · cohort
    Of 192,651 eligible participants, 62.8% reported consuming <1 serving/month avocados/guacamole, 26.7% reported 1-3 servings/month, and 10.5% reported ≥1 serving/week. When adjusted for relevant covariates, there was no significant association with incident colorectal cancer overall
    Nutr Cancer, 2024 · checked 2026-09-23