Sweet potato chips: real vitamin A, and more acrylamide than potato chips

In a 10-week randomized trial in 120 Bangladeshi women with low vitamin A status, orange sweet potato fried at home raised blood beta-carotene slightly more than the same potato boiled, a gap that did not reach significance (P = 0.07). Those were home-fried pieces. We found no study that fed commercial sweet potato chips to people and measured any outcome. What the bag holds is known from tables. US survey data put a 28 g small bag at 148 calories, 9 g fat and 330 mcg of vitamin A as RAE, a figure that depends on the flesh being orange. The less flattering number comes from Spanish shop samples. Sweet potato chips there carried 2342 mcg/kg of acrylamide, about 4.5 times the 524 mcg/kg in potato chips, and the abstract does not say how many brands were tested. So the idea of a healthier chip has no outcome data behind it in either direction.

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

How much is actually in it

• FNDDS lists sweet potato chips at 529 calories, 32.19 g fat, 227 mg sodium and 1178 ug vitamin A (RAE) per 3.5 oz (100 g). — — Evidence E source
  Per 100 g: 529 calories, fat 32.19 g, carbohydrate 56.54 g, total sugars 8.78 g, fiber 8.8 g, sodium 227 mg, potassium 920 mg, vitamin A 1178 ug RAE
• In Health Canada retail surveys from 2009 to 2020, sweet potato chips had the highest mean acrylamide of the potato and sweet potato products tested. — retail potato and sweet potato chips, French fries and frozen products, Canada, 5 surveys 2009-2020 Evidence D source
  Highest mean acrylamide in sweet potato chips, potato chips ranged 57 to 4660 ng/g
• In Spanish retail samples, sweet potato chips held 2342 ug/kg acrylamide, about 4.5 times the 524 ug/kg in potato chips, while in vitro digestion released about 60% of it. — commercial potato, sweet potato, beetroot and carrot chips, Spain Evidence D source
  Acrylamide 2342 ug/kg sweet potato vs 524 ug/kg potato chips, bioaccessibility 59.7-60.4% veggie vs 71.7% potato chips

What a real portion looks like

• FNDDS sizes a small single-serving bag of sweet potato chips at 28 g, about 148 calories, 9 g fat and 330 ug vitamin A (RAE). — — Evidence E source
  1 chip 2 g, 1 cup 25 g, small bag 28 g (148 calories, 9.0 g fat, 64 mg sodium, 330 ug RAE), medium bag 57 g (302 calories), large bag 85 g (450 calories)

What your body absorbs

• In a 60-day RCT in Bangladeshi women, fried orange-fleshed sweet potato raised plasma beta-carotene marginally more than boiled (P = 0.07). — Bangladeshi women with low vitamin A status, 30 per group, 6 days a week for 10 weeks, 600 ug RAE a day (n = 120) Evidence B source
  Final plasma beta-carotene higher with OFSP (P < 0.0001), fried vs boiled P = 0.07, body vitamin A pool no group difference
• In 10 healthy men, beta-carotene from a deep-fried sweet potato ball was absorbed at 37% of the level from purified beta-carotene beadlets. — 10 healthy men, single ingestion of each source, serum response to 32 h (n = 10) Evidence C source
  Relative bioavailability 37% (sweet potato), 33% (carrot), 26% (water convolvulus)

What cooking and storage change

• Laboratory data suggest sweet potato chips fried in less unsaturated oil formed less acrylamide, 1443 against 2019 ug/kg. — sweet potato slices fried in palm olein, coconut, canola or soybean oil, Malaysia Evidence D source
  1443 ug/kg (lower unsaturation oils) vs 2019 ug/kg (higher unsaturation oils)
• Laboratory data suggest pulsed electric field pretreatment at 3 kJ/kg cut acrylamide in sweet potato kettle chips by 44.6%, from 0.668 to 0.370 ug/g. — Covington sweet potatoes, kettle chips 1.7 mm, canola oil from 130 C for 360 s, n = 4 replicates Evidence D source
  Acrylamide 0.668 ug/g control, 0.498 ug/g low PEF (P = 0.067), 0.370 ug/g high PEF (P = 0.003), oil down about 8.5%
• Laboratory data suggest pulsed electric field, blanching or both before frying lowered acrylamide in sweet potato chips by about 46% against untreated chips. — sweet potato slices fried in sunflower oil at 150 C for 6 min, China Evidence D source
  Acrylamide about 46.1% lower with any pretreatment, no difference between pretreatments

What it does to your health

• Observational data from 32 publications found no meaningful link between dietary acrylamide and most cancers, with a borderline kidney cancer signal (RR 1.20). — epidemiological studies to July 2014, 14 cancer sites Evidence C source
  Kidney cancer RR 1.20 (95% CI 1.00 to 1.45), other sites null

Safety, limits and interactions

• Observational data pooled from 5 studies (53,870 mother-newborn pairs) link the highest quartile of acrylamide blood adducts in pregnancy with 20% higher odds of small-for-gestational-age birth. — 53,870 mother-newborn pairs in 5 studies (n = 53870) Evidence C source
  SGA OR 1.20 (95% CI 1.08 to 1.33), birth weight -131 g (95% CI -204 to -58)

What people believe that the data does not support

• The EU did not authorize the claim that beta-carotene is an antioxidant that protects the body's cells, so a chip pack cannot say it in the EU. — — Evidence E source
  Claim status non-authorized

Who this works differently for

• In 24 iron-depleted Malawian women, fractional iron absorption from 400 g sweet potato breakfasts was about 6% for both regular and biofortified sweet potato. — 24 iron-depleted Malawian women, 400 g sweet potato breakfasts for 2 weeks per variety (n = 24) Evidence B source
  FIA 5.82% (3.79 to 8.95) regular, 6.02% (4.51 to 8.05) biofortified sweet potato
• In an RCT in 180 South African children aged 5-10, 125 g a day of boiled orange-fleshed sweet potato for 53 school days improved liver vitamin A stores versus white-fleshed sweet potato. — primary school children aged 5-10, 90 per group, 53 school days (n = 180) Evidence B source
  DR:R -0.008 (95% CI -0.015 to -0.001), P = 0.0203

The bottom line

Per 100 g the chips give 529 calories, 32.19 g fat, 8.8 g fiber and 227 mg sodium in US survey data, from a single food code with no brand detail. A medium bag is 57 g and 302 calories, a large one 85 g and 450 calories, values worked out from the 100 g figures. In 10 healthy men, beta-carotene from a deep-fried sweet potato ball was absorbed at 37 percent of the level from purified beadlets, in a single-dose study whose randomization is not stated. Flesh color is what decides the vitamin A. In 180 South African children aged 5 to 10, 125 g a day of boiled orange sweet potato for 53 school days improved liver vitamin A stores against white sweet potato. The EU has not authorized the claim that beta-carotene protects the body's cells, so a pack sold there cannot print it. How the chips are made changes the acrylamide. Health Canada surveys from 2009 to 2020 found the highest mean acrylamide in sweet potato chips among the potato and sweet potato products tested, and the abstract gives no value for them. Laboratory data suggest two ways down. Slices fried in less unsaturated oils formed 1443 mcg/kg against 2019 mcg/kg in more unsaturated ones, in a Malaysian lab fryer. Pulsed electric field treatment at 3 kJ/kg before frying cut acrylamide by 44.6 percent in kettle chips from one cultivar, over 4 replicates. In a second lab study, pulsed electric field, blanching or both cut it by about 46 percent. In the Spanish samples, simulated digestion released about 60 percent of the acrylamide in veggie chips against 71.7 percent in potato chips, a test tube result that says nothing yet about human absorption. What acrylamide does to people is less settled than the chemistry. Observational data from 32 publications found no meaningful link between total dietary acrylamide and most of 14 cancer sites, with a borderline kidney signal (RR 1.20, 95% CI 1.00 to 1.45), and none of it looked at sweet potato chips. The caution with data behind it is pregnancy. Pooled observational data from 53,870 mother and newborn pairs link the highest quarter of acrylamide blood markers with 20 percent higher odds of a baby small for gestational age (OR 1.20, 95% CI 1.08 to 1.33), counting acrylamide from all foods and from smoking. That is an association, and we found no data on these chips alone. We have no card on allergy, children or medicines for this snack.

Sources

1. spch-r7-01 · food composition dataset
   Sweet potato chips (FNDDS 73410210, fdc 2709710): Energy 529 KCAL, Total lipid (fat) 32.19 G, Carbohydrate, by difference 56.54 G, Total Sugars 8.78 G, Fiber, total dietary 8.8 G, Sodium, Na 227 MG, Potassium, K 920 MG, Vitamin A, RAE 1178 UG per 100 g
   USDA FNDDS 2021-2023, code 73410210 (fdc 2709710) · checked 2026-09-30
2. spch-r7-03 · laboratory food analysis
   Between 2009 and 2020, five surveys were conducted to determine acrylamide in high carbohydrate-containing foods in Canada... The highest mean acrylamide levels were found in sweet potato chips.
   Food Addit Contam Part A Chem Anal Control Expo Risk Assess, 2024 · checked 2026-09-30
3. spch-r7-04 · in vitro study
   Sweet potato chips exhibited the highest acrylamide content (2342 µg/kg), followed by carrot (1279 µg/kg), beetroot (947 µg/kg) and potato chips (524 µg/kg). After in vitro digestion, acrylamide bioaccessibility was significantly lower in veggie chips (59.7-60.4 %) than in potato chips (71.7 %).
   Food Res Int, 2023 · checked 2026-09-30
4. spch-r7-02 · food composition dataset
   Sweet potato chips (fdc 2709710): 1 chip = 2 g; 1 small single serving bag = 28 g; 1 medium single serving bag = 57 g; 1 large single serving bag = 85 g; 1 100 calorie package = 18 g; 1 cup = 25 g; Quantity not specified = 28 g
   USDA FNDDS 2021-2023, code 73410210 (fdc 2709710), portions · checked 2026-09-30
5. spch-r7-08 · randomized controlled trial
   final mean plasma β-carotene concentrations were higher in groups that received OFSP (P < 0.0001), and final mean plasma β-carotene was marginally higher in the group that received fried OFSP compared with boiled OFSP (P = 0.07).
   J Nutr, 2012 · checked 2026-09-30
6. spch-r7-09 · controlled feeding study
   Accordingly, the bioavailability was 65% for beadlets + radish, 33% for carrots, 26% for water convolvulus leaves and 37% for sweet potatoes.
   J Nutr, 2000 · checked 2026-09-30
7. spch-r7-05 · food chemistry experiment
   SP chips that were fried in a lower degree of unsaturation oils contained a lower acrylamide concentration (1443 μg/kg), whereas those fried with higher degree of unsaturated oils contained a higher acrylamide concentration (2019 μg/kg).
   J Food Sci, 2014 · checked 2026-09-30
8. spch-r7-06 · food chemistry experiment
   It was determined that the use of PEF technology reduced the amount of AA measured in quadruplicate from 0.668 μg/g in the control to 0.498 μg/g (low PEF) and 0.370 μg/g (high PEF) (Table 2). Compared to the control sample, the p-value for low PEF was insignificant at 0.067, and for high PEF it was significant at 0.003. PEF application at 3 kJ/kg decreased AA concentration in the SPKC by 44.6% compared to the untreated control.
   Foods, 2025 · checked 2026-09-30
9. spch-r7-07 · food chemistry experiment
   The AA content in the fried sweet potato chips versus the pretreated chips is shown in Figure 7, which demonstrates that pretreatment (PEF, blanching, and PEF + blanching) significantly decreased the AA content in the fried samples by nearly 46.10% compared to the untreated samples.
   Foods, 2023 · checked 2026-09-30
10. spch-r7-13 · meta-analysis of observational studies
    No meaningful associations were found for most cancers considered... The RR was of borderline significance only for kidney cancer (RR = 1.20; 95% confidence interval, CI, 1.00-1.45).
    Int J Cancer, 2015 · checked 2026-09-30
11. spch-r7-12 · meta-analysis of observational studies
    Higher risk of SGA and lower birth weight and head circumference were observed in the highest quartile of AA-Hb [odds ratio (OR): 1.20 (95% CI: 1.08; 1.33); mean difference (MD): -131 g (95% CI: -204; -58)
    Environ Res, 2022 · checked 2026-09-30
12. spch-r7-14 · regulatory decision
    POL-HC-6702 Beta-Carotene Is an antioxidant that protects the body’s cells. Can protect you from free radicals. Can protect your cells and tissues from oxidation. Can contribute to the total antioxidant capacity of the body. Protects the body's cells. Non-authorised
    EU Register on nutrition and health claims, claim POL-HC-6702, snapshot 2026-09-21 · checked 2026-09-30
13. spch-r7-10 · randomized crossover trial
    Geometric mean (95% CI) fractional iron absorption (FIA) was 5.82% (3.79%, 8.95%) and 6.02% (4.51%, 8.05%), respectively (P = 0.81), resulting in 1.9-fold higher total iron absorption (TIA) from biofortified sweetpotato (P < 0.001).
    J Nutr, 2020 · checked 2026-09-30
14. spch-r7-11 · randomized controlled trial
    The estimated intervention effect for the ratio of 3,4-didehydroretinol to retinol (DR:R) was -0.008 (95% CI: -0.015, -0.001; P = 0.0203), which indicated a greater improvement in vitamin A liver stores in the treatment group than in the control group.
    Am J Clin Nutr, 2005 · checked 2026-09-30