Pickle relish: a salty spoonful whose science is borrowed from vinegar

We found no study of pickle relish itself, so the best evidence on this page is about vinegar, one of its ingredients. In a randomized trial in 16 people with type 2 diabetes, vinegar added to a single high glycemic meal cut the 2 hour glucose response from 311 to 181 mmol min/l. That was one meal, and we hold no source on vinegar taken alongside glucose-lowering medicines, so it is no reason to change them. A tablespoon of relish holds far less vinegar than that trial used. With a low glycemic meal the same vinegar made no significant difference. Sweet relish is itself 35 g carbohydrate per 3.5 oz (100 g), so it is not a way to lower blood glucose. What relish reliably brings is salt. The USDA record for sweet relish has 811 mg of sodium per 3.5 oz (100 g), and the three relish records run from 811 to 1096 mg. A 15 g tablespoon works out to about 122 mg, a figure calculated from the 100 g value and never measured in an actual spoonful.

The numbers, per 3.5 oz (100 g)

As people eat it, per 3.5 oz (100 g)

How much is actually in it

• Sweet pickle relish carries 811 mg of sodium and 35 g of carbohydrate per 3.5 oz (100 g), plus 83.8 mcg of vitamin K. — USDA SR Legacy reference record for sweet pickle relish, with hot dog and hamburger relish records as comparison Evidence E source
  Sodium 811 mg per 3.5 oz (100 g) (35% DV), range 811 to 1096 mg across 3 records; carbohydrate 35.06 g (range 23.35 to 35.06 g); vitamin K 83.8 mcg (70% DV)

What a real portion looks like

• A tablespoon of pickle relish weighs 15 g in the USDA survey database, and a large sandwich takes about 30 g. — FNDDS food code 75503020, Relish, pickle, US portion weights Evidence E source
  1 tablespoon 15 g, 1 individual packet 9 g, regular sandwich 15 g, large sandwich 30 g; at 811 mg per 3.5 oz (100 g) a tablespoon carries about 122 mg sodium

What your body absorbs

• Acetic acid from vinegar is absorbed fast: in 30 healthy adults serum acetate peaked 15 minutes after a vinegar drink with 750 mg acetic acid and was back to baseline by 90 minutes. — 30 healthy adults after an overnight fast, single doses of 750 mg acetic acid as drink or capsules (n = 30) Evidence B source
  Serum acetate peak above 200 umol/L at 15 min (drink) and 30 min (capsules); capsule AUC about 80% of drink AUC, not significantly different

What it does to your health

• Observational data link eating Asian pickled vegetables with about twice the odds of esophageal squamous cell cancer, a finding that does not transfer directly to vinegar-brined relish. — 34 observational studies, 31 case-control and 3 prospective, mostly from mainland China (n = 34 studies) Evidence C source
  OR 2.08 (95% CI 1.66 to 2.60), I2 88%
• In a trial of 16 people with type 2 diabetes, adding vinegar to a high glycemic meal cut the 2 hour glucose response from 311 to 181 mmol min/l, with no significant difference on a low glycemic meal. — 16 patients with type 2 diabetes, single test meals of mashed potatoes or whole grain bread, glucose followed for 2 hours (n = 16) Evidence B source
  Glucose iAUC 181 vs 311 mmol min/l with vinegar on a high GI meal (P=0.04); 229 vs 238 on a low GI meal (P=0.56)

Safety, limits and interactions

• The FDA puts average US sodium intake near 3,400 mg a day against a 2,300 mg daily limit for people aged 14 and older, so salty condiments add to an existing excess. — US population aged 14 years and older Evidence E source
  Average intake about 3,400 mg per day against a 2,300 mg per day limit

What people believe that the data does not support

• Apple cider vinegar did not change 24 hour urine citrate, pH or volume in a small one week crossover trial, while lemon water raised citrate by about 168 mg a day. — 20 adults without kidney stones, 6 of whom took diluted apple cider vinegar daily for one week (n = 20) Evidence B source
  Vinegar: no significant change; lemon water +167.7 mg/24 h citrate (95% CI 16 to 319)
• The EU refused a weight control claim for apple cider vinegar, and none of the 6 vinegar claims in the EU register is authorized. — EU Register on nutrition and health claims, snapshot 2026-09-21 Evidence E source
  0 authorized of 6 vinegar claims

What is still unknown

• The pickle and cancer meta-analysis deliberately excluded studies of pickles made differently from East and Southeast Asian ones, so Western vinegar pickles and relish have no pooled cancer estimate. — Screening of 58 candidate studies for the 2009 meta-analysis (n = 58 screened) Evidence C source
  Studies of non-Asian pickling methods excluded, no estimate for Western pickles

The bottom line

Sweet relish is 35 g carbohydrate per 3.5 oz (100 g) in that same record, which has no Foundation samples and no second independent number to check it against. A large sandwich takes about 1.1 oz (30 g) of relish in the USDA survey. The FDA puts average American sodium intake near 3,400 mg a day, above the 2,300 mg limit advised for everyone aged 14 and older, so relish lands on a total that is already too high for most people. The same USDA record lists 83.8 mcg of vitamin K per 3.5 oz (100 g), about 13 mcg in a 15 g tablespoon by the same arithmetic. We hold no source on relish and medicines. If you take a medicine whose dose your doctor sets against your vitamin K intake, tell whoever manages that dose before changing how much relish you eat. Sodium is the only other caution we have a card for, and we have nothing on children or pregnancy for relish specifically. Pickles have a cancer story, and it does not transfer directly to relish. Across 34 observational studies, mostly from mainland China, eating Asian pickled vegetables was linked to about twice the odds of esophageal squamous cell cancer (odds ratio 2.08, 95% CI 1.66 to 2.60), with results that varied widely between studies and signs of publication bias. Those authors deliberately excluded studies of pickles made by other methods, so vinegar-brined Western pickles and relish have no pooled estimate at all. The vinegar itself is absorbed quickly. In 30 healthy fasting adults, a drink with 750 mg of acetic acid, about 1 tbsp (15 ml) of 5 percent vinegar and more than a spoonful of relish holds, pushed blood acetate to its peak at 15 minutes and back to baseline by 90. Popular vinegar claims fare worse. In a one week trial in 20 adults without kidney stones, small, open and stopped early, the 6 who took diluted apple cider vinegar saw no significant change in urine citrate, pH or volume. In the same trial lemon water raised citrate by about 168 mg a day (95% CI 16 to 319). The EU register holds 6 health claims for vinegar, one of them for weight control, and none is authorized, which means the evidence fell short when it was assessed.

Sources

1. prel-r5-01 · USDA FoodData Central SR Legacy, dataset
   Pickle relish, sweet (FDC 168561, SR Legacy, Vegetables and Vegetable Products): sodium 811 mg per 100 g = 35% DV, 811-1096 mg across 3 records; carbohydrate 35.06 g = 13% DV, 23.35-35.06 g across 3 records; vitamin K 83.8 ug = 70% DV; Foundation samples 0, CoFID match none
   USDA FoodData Central, SR Legacy, FDC 168561 · checked 2026-09-29
2. prel-r5-02 · USDA FNDDS, dataset
   Relish, pickle (FNDDS 75503020, FDC 2710079, WWEIA Olives, pickles, pickled vegetables): 1 tablespoon 15 g; 1 individual packet 9 g; Guideline amount on regular sandwich 15 g; Guideline amount on large sandwich 30 g; Quantity not specified 15 g
   USDA FNDDS, food code 75503020, FDC 2710079 · checked 2026-09-29
3. prel-r5-07 · randomized controlled trial
   In the vinegar drink group, serum acetate concentration increased immediately after intake, peaked at 15 min and returned to baseline at 90 min.
   J Nutr Sci Vitaminol (Tokyo), 2010 · checked 2026-09-29
4. prel-r5-04 · meta-analysis of case-control and cohort studies
   A total of 34 studies were included in this analysis. The overall random effects odds ratio (OR) and 95% confidence interval (CI) for pickled vegetable consumption was 2.08 (1.66-2.60), but the results were heterogeneous across studies.
   Br J Cancer, 2009 · checked 2026-09-29
5. prel-r5-06 · randomized controlled trial
   In group A, the incremental area under the curve of glucose (GiAUC(120)) was lower after the addition of vinegar (181+/-78 mmol min/l vs 311+/-124 mmol min/l, P=0.04).
   Eur J Clin Nutr, 2010 · checked 2026-09-29
6. prel-r5-03 · US FDA web page
   Average sodium intake in the U.S. is approximately 3,400 milligrams/day, while the Dietary Guidelines for Americans, 2020-2025 advises individuals 14 years and older to limit their consumption to 2,300 milligrams/day.
   US FDA, Sodium Reduction in the Food Supply, 2025 · checked 2026-09-29
7. prel-r5-08 · randomized controlled trial
   ACV did not significantly change 24-h urinary parameters. Coconut water (+ 273.8 mg/24 h, 95% CI 67.9-480 mg/24 h) and lemon water (+ 167.7 mg/24 h, 95% CI 16-319 mg/24 h) were associated with increased urinary citrate.
   Int Urol Nephrol, 2026 · checked 2026-09-29
8. prel-r5-09 · EU health claims register
   POL-HC-6626 Apple cider vinegar Helps control and normalize body weight. Non-authorised
   EU Register on nutrition and health claims, claim POL-HC-6626, snapshot 2026-09-21 · checked 2026-09-29
9. prel-r5-05 · meta-analysis of case-control and cohort studies
   these 24 were excluded because: (i) no risk estimates or crude numbers of cases and controls for the exposure-of-interest were reported (Shen et al, 1999; Wang et al, 2006); (ii) the method of pickling vegetables differed from those in East and Southeast Asia (Onuk et al, 2002; Sapkota et al, 2008)
   Br J Cancer, 2009 · checked 2026-09-29