Snow cone: a cup of syrup with ice in it

In a meta-analysis of randomized trials in adults eating freely, adding sugars raised body weight by 1.7 lb (95% CI 0.66 to 2.6; metric: 0.75 kg, 0.30 to 1.19) and cutting them lowered it by 1.8 lb (0.86 to 2.7; metric: 0.80 kg, 0.39 to 1.21), and that effect runs through the extra energy. A snow cone is about as direct a sugar delivery as food gets. One standard 200 g cone carries about 65 g of sugar and 256 calories in US survey data, almost all of it from the syrup, and that figure comes from one recipe entry while the syrup a vendor pours varies widely. The no-sugar-added cone in the same survey holds 1.5 g sugar and 24 calories per 3.5 oz (100 g), against 32.6 g and 128 calories for the regular one. We found no study of snow cones themselves on any health outcome. What can be said comes from research on sugar, on cold food eaten fast and on the synthetic colors that make the syrup red or blue.

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

How much is actually in it

• A no-sugar-added snow cone holds 1.5 g sugar and 24 calories per 3.5 oz (100 g), against 32.6 g and 128 calories for the regular one. — US household measures, FNDDS (n = 2 food codes) Evidence E source
  Sugar 1.52 vs 32.6 g/100 g; energy 24 vs 128 calories/100 g; carbohydrate 5.92 vs 32.6 g/100 g

What a real portion looks like

• One standard snow cone (200 g) carries about 65 g of sugar and 256 calories in US survey data, almost all of it from the syrup. — US household measures, FNDDS (n = 1 food code) Evidence E source
  Per 100 g: total sugars 32.6 g, energy 128 calories; per cone 200 g: 65.2 g, 256 calories; per cup 130 g: 42.4 g, 166.4 calories

What it does to your health

• In a meta-analysis of trials in adults eating freely, adding sugars raised body weight by 1.7 lb (0.75 kg) and cutting them lowered it by 1.8 lb (0.80 kg). — adults on ad libitum diets in randomized trials of at least two weeks (n = 30 trials) Evidence A source
  Reduced sugars -1.8 lb (95% CI 0.86 to 2.7; metric: -0.80 kg, 0.39 to 1.21); increased sugars +1.7 lb (0.66 to 2.6; metric: 0.75 kg, 0.30 to 1.19); isoenergetic swap 0.09 lb (0.04 kg)
• Across 14 RCTs lasting 3 to 76 weeks, swapping sugar-sweetened drinks for artificially sweetened ones cut body weight by a modest 1.6 lb (0.73 kg). — participants in 14 RCTs, 3-76 weeks (n = 14 trials) Evidence A source
  Body weight -1.6 lb (-0.73 kg), body fat -0.72%; glycemic and cardiometabolic markers inconsistent

Safety, limits and interactions

• In a randomized trial of 145 middle school students, eating 3.4 fl oz (100 ml) of ice cream in under 5 seconds doubled cold-stimulus headache, 27% versus 13%. — 145 students at one middle school in Hamilton, Canada, mean age 12.7 years (n = 145) Evidence B source
  Relative risk 2.2 (95% CI 1.03 to 4.94); most headaches lasted under 10 seconds

What people believe that the data does not support

• The FDA revoked FD&C Red No. 3 for foods in January 2025 because it caused cancer in male rats at high doses, with reformulation due by January 2027. — US food supply Evidence E source
  Authorization revoked; foods must be reformulated by 15 January 2027

Who this works differently for

• In 15 double-blind trials in children with hyperactive syndromes, artificial food colors raised hyperactivity with an effect size of 0.28. — children with hyperactive syndromes in double-blind placebo-controlled trials (n = 15 trials) Evidence A source
  Effect size 0.283 (95% CI 0.079 to 0.488); 0.210 (0.007 to 0.414) after excluding smallest and lowest quality trials
• A meta-analysis of 24 publications found a small effect of synthetic food colors on parent-rated ADHD symptoms, g 0.18, shrinking to 0.12 after bias adjustment. — children with ADHD or ADHD symptoms (n = 24 publications) Evidence A source
  Parent reports g 0.18 (95% CI 0.08 to 0.24); 0.12 (0.01 to 0.23) after publication bias adjustment
• In a trial of 297 children from the general population, a drink with artificial colors and sodium benzoate raised hyperactivity scores in 3-year-olds by an effect size of 0.20. — 153 3-year-old and 144 8/9-year-old children (n = 297) Evidence B source
  Mix A vs placebo in 3-year-olds: effect size 0.20 (95% CI 0.01 to 0.39); mix B not significant in this age group

What is still unknown

• Whether the dyes approved in the US change behavior on their own is unsettled: the color effect was not reliable in studies confined to FDA-approved colors. — children with ADHD or ADHD symptoms (n = 24 publications) Evidence A source
  Color-only studies g 0.21 (95% CI 0.06 to 0.36), lost after bias correction and in FDA-approved-color studies

The bottom line

Choosing the no-sugar-added version is the one swap with trial data behind it, and only by analogy. In 14 randomized trials lasting 3 to 76 weeks, replacing sugar-sweetened drinks with artificially sweetened ones cut body weight by 1.6 lb (0.73 kg) and body fat by 0.72%, with inconsistent effects on blood sugar and cardiometabolic markers. Those trials tested drinks. The survey entry does not name the sweetener in the no-sugar cone. The colors are where the evidence on children sits. In 15 double-blind trials in children with hyperactive syndromes, artificial food colors raised hyperactivity with an effect size of 0.28 (95% CI 0.08 to 0.49), falling to 0.21 once the smallest and weakest trials were removed, and the authors noted publication bias. A second meta-analysis of children with ADHD or ADHD symptoms found parent-rated symptoms rose by g 0.18 (0.08 to 0.24), shrinking to 0.12 after adjusting for publication bias, and teacher ratings showed no significant effect. In a randomized trial in children from the general population, a drink mixing colors with the preservative sodium benzoate raised hyperactivity scores in 3-year-olds by an effect size of 0.20 (0.01 to 0.39). The dyes were not tested apart from the preservative there. Whether the dyes approved in the US act on behavior by themselves is unsettled, and the reason is specific. In color-only studies the effect reached g 0.21, then disappeared after correction for publication bias. It was also not reliable in studies limited to colors the FDA approves. None of these studies used snow cone syrup. Who should take care. For parents of a child with hyperactivity or ADHD, the dye trials above are the reason to notice what color the syrup is. In a randomized trial of 145 students at one Canadian middle school, 27% of those told to eat ice cream fast got a cold-stimulus headache against 13% of those who ate it slowly. That was ice cream, and the headaches were brief and harmless. On 15 January 2025 the FDA revoked the authorization of FD&C Red No. 3 in foods, a decision based on cancer in rats at high exposure that says nothing directly about human risk. Red syrups may use Red 40 instead.

Sources

1. sncn-r6-02 · reference dataset
   FNDDS 2710324 (91621050) Snow cone, no sugar added: Total Sugars 1.52 g/100 g, Energy 24 kcal/100 g, Carbohydrate 5.92 g/100 g · FNDDS 2710323 Snow cone: Total Sugars 32.6 g/100 g, Energy 128 kcal/100 g, Carbohydrate 32.6 g/100 g
   USDA FNDDS 2021-2023 · checked 2026-10-02
2. sncn-r6-01 · reference dataset
   FNDDS 2710323 (91621000) Snow cone: Total Sugars 32.6 g/100 g, 1 snow cone 200 g 65.2 g, 1 cup 130 g 42.4 g · Energy 128 kcal/100 g, 1 snow cone 256.0 kcal, 1 cup 166.4 kcal
   USDA FNDDS 2021-2023 · checked 2026-10-02
3. sncn-r6-03 · meta-analysis of RCTs
   In trials of adults with ad libitum diets (that is, with no strict control of food intake), reduced intake of dietary sugars was associated with a decrease in body weight (0.80 kg, 95% confidence interval 0.39 to 1.21; P<0.001); increased sugars intake was associated with a comparable weight increase (0.75 kg, 0.30 to 1.19; P=0.001).
   BMJ, 2012 · checked 2026-10-02
4. sncn-r6-04 · meta-analysis of RCTs
   In 14 RCTs (3-76 weeks), replacing SSBs with ASBs produced modest reductions in body weight (-0.73 kg) and body fat (-0.72%), with inconsistent effects on glycemic and cardiometabolic markers.
   Diabetes Metab J, 2026 · checked 2026-10-02
5. sncn-r6-09 · randomized controlled trial
   Twenty (27%) of 73 students in the accelerated eating group reported ice cream headache compared with 9 (13%) of 72 students in the cautious eating group
   BMJ, 2002 · checked 2026-10-02
6. sncn-r6-10 · agency position
   On January 15, 2025, the U.S. Food and Drug Administration issued an order revoking the authorization for the use of FD&C Red No. 3 in foods
   US FDA, 2025 · checked 2026-10-02
7. sncn-r6-05 · meta-analysis of RCTs
   Meta-analytic modeling determined the overall effect size of AFCs on hyperactivity to be 0.283 (95% CI, 0.079 to 0.488), falling to 0.210 (95% CI, 0.007 to 0.414) when the smallest and lowest quality trials were excluded.
   J Dev Behav Pediatr, 2004 · checked 2026-10-02
8. sncn-r6-06 · meta-analysis
   For food colors, parent reports yielded an effect size of g = 0.18 (95% CI, 0.08-0.24; p = .0007), which decreased to 0.12 (95% CI, 0.01-0.23; p < .05) after adjustment for possible publication bias.
   J Am Acad Child Adolesc Psychiatry, 2012 · checked 2026-10-02
9. sncn-r6-08 · randomized controlled trial
   Mix A had a significantly adverse effect compared with placebo in GHA for all 3-year-old children (effect size 0.20 [95% CI 0.01-0.39], p=0.044) but not mix B versus placebo.
   Lancet, 2007 · checked 2026-10-02
10. sncn-r6-07 · meta-analysis
    The effect was reliable in studies restricted to food color additives (g = 0.21, 95% CI = 0.06-0.36) but did not survive correction for possible publication bias and was not reliable in studies confined to Food and Drug Administration-approved food colors.
    J Am Acad Child Adolesc Psychiatry, 2012 · checked 2026-10-02