Tomato

The ripe fruit of Solanum lycopersicum; used fresh, dried, or as paste/powder for savory flavor, red color (lycopene), and nutrients.

Should I eat Tomato?

Tomato is a nutrient‑dense, low‑sugar whole food that adds color, umami, and useful micronutrients. Most people can enjoy it regularly, but those with reflux, IBS, or specific allergies may need smaller servings or less‑concentrated forms.

Summary

Tomatoes offer vitamin C, fiber, and lycopene with very few calories and a low glycemic impact. Safety reviews of lycopene as a food color support typical dietary exposures, while rare IgE‑mediated tomato allergies are documented. For IBS, low‑FODMAP portions are modest, and concentrated products can be more provocative. Overall, tomatoes fit well into most balanced diets when portion sizes align with individual tolerance.

Key Research Benefits

Low impact on blood sugar

Raw tomatoes have a low glycemic index (about 15–20), so usual portions have minimal effect on blood glucose.

Nutrient-dense and low-calorie

A medium tomato has roughly 22 calories and provides vitamin C and some fiber, helping nutrient intake without adding much energy.

Source of lycopene

Tomatoes supply lycopene, a carotenoid pigment; this compound has been safety‑reviewed when used as a colorant, and tomatoes are a common dietary source.

Key Research Risks

IBS: watch serving size

On a low-FODMAP diet, tomato is tolerated only in small amounts (about 65 g for regular, around 45 g for cherry), with larger servings more likely to cause bloating or discomfort.

Allergy and cross‑reactivity

IgE‑mediated tomato allergy can involve lipid transfer proteins and may cross‑react with latex and other plant foods, so sensitized individuals should be cautious.

Processed forms are more concentrated

Tomato pastes and powders deliver more tomato solids per spoonful; these concentrated products are common (e.g., spray‑dried powders) and may be more provocative for people prone to reflux or IBS symptoms.

Overview

What is it?

Source: Ripe tomato fruit

Method: Wash, pulp, concentrate or dry, then mill

Processing Level: 1 / 10

Why is it used?

Purpose: Adds savory flavor, natural red color, and micronutrients.

Commonly found in: sauces, soups, seasonings, snacks, savory bars

Why manufacturers choose it: Reliable natural red color and umami with broad consumer acceptance.

Origin

Tomato was domesticated by Indigenous peoples of the Americas and eaten by the Aztecs (Nahuatl: tomatl/xitomatl). Spaniards carried it to Europe in the 16th century, where early herbals described it by the 1540s. Despite early suspicion due to its nightshade family ties, it spread across Europe and then globally; modern genomics shows a complex domestication across Peru–Ecuador–Mexico lineages.

Process: Wash, pulp, concentrate or dry, then mill

Steps

1. Wash & sort: Clean ripe tomatoes; remove defects.

2. Pulp: Crush and screen to tomato pulp/paste.

3. Concentrate: Evaporate water to paste (optional).

4. Dry: Spray/drum/foam-mat dry to powder.

5. Mill & pack: Sieve to powder size; package.

Chemicals

Research & Safety

Research Summary

Tomatoes are a whole-food ingredient that brings color, savory notes, and nutrients with few calories. They have a low glycemic index, so usual portions have little effect on blood sugar, and they contribute vitamin C and lycopene. Lycopene, the red carotenoid in tomatoes and a permitted food color, has been safety‑reviewed with an EFSA ADI of 0.5 mg/kg body weight per day. People with sensitive digestion should note that low‑FODMAP portions are small, and rare IgE‑mediated tomato allergy is documented, including potential latex cross‑reactivity. Industrially, tomato is often concentrated (paste) or spray‑dried to powder, which increases tomato solids per bite and may be more triggering for those prone to reflux or IBS symptoms. For most people, though, tomatoes are a nutrient‑dense, low‑sugar choice that fits well in a balanced diet.

Digestive Effects

Most people tolerate tomatoes well, but their natural acidity can aggravate reflux in sensitive individuals, particularly when the tomato is concentrated. For IBS, small portions may be better tolerated; regular tomato around 65 g is considered low FODMAP, while larger amounts can trigger symptoms. Concentrated forms (paste, powder) pack more tomato compounds per bite, which may be more provocative if you are prone to heartburn or bloating. Tomatoes are low GI, so they typically do not cause rapid blood sugar changes.

Limit Consumption

Infants can try small amounts as part of weaning, but acidity may cause temporary perioral redness; start with small tastes and observe. People with IBS on a low‑FODMAP diet should stick to small serves to reduce symptom risk. Those with known latex allergy or sensitization to lipid transfer proteins should be cautious due to potential cross‑reactivity. Individuals with histamine intolerance or frequent reflux may find concentrated tomato products more symptomatic and may choose smaller amounts or lower‑acid alternatives.

Fact Sheet

Regulatory Status

US FDA: Not an additive—ordinary food. (Lycopene colorant separately evaluated.)

EU Status: Ordinary food; lycopene (E160d) approved color with ADI.

Codex INS: N/A for tomato; lycopene is INS 160d.

JECFA ADI: For lycopene colorant only: group ADI 'not specified' (JECFA 2009) / EFSA ADI 0.5 mg/kg bw/day.

ESG & Sustainability

Environmental Footprint: Global average ~2.1 kg CO₂e per kg tomatoes (farm-to-retail).

Sustainability: Relatively low emissions among crops; greenhouse production and long-distance air freight can increase footprint.

Animal Welfare: Plant-based ingredient (not applicable).

Carbon Footprint: ~2.1 kg CO₂e/kg (Poore & Nemecek 2018 global average).

Allergens and Diet

Allergen Status: None

Diet Compatibility: Vegan, Vegetarian, Kosher, Halal, Gluten-free, Dairy-free, Non-GMO, Low-FODMAP

Natural Alternatives

Red bell pepper

Source: Capsicum annuum fruit

Processing Level: Light

Common Uses: Color, mild sweetness, flavor

Replacement Benefit: Similar vitamins and carotenoids with low sugar; gentle flavor.

Why it's not used: Tomato offers stronger umami and characteristic flavor; more cost-effective and widely available.

Beet powder

Source: Beetroot

Processing Level: Light

Common Uses: Natural red color, earthy note

Replacement Benefit: Whole-food colorant with nitrates that may aid vasodilation.

Why it's not used: Tomato color is more orange-red and adds umami without beet earthiness.

Carrot powder

Source: Daucus carota root

Processing Level: Light

Common Uses: Color, mild sweetness, fiber

Replacement Benefit: Whole-food carotenoids and fiber.

Why it's not used: Tomato imparts distinctive savory taste and better aligns with savory bar profiles.

Citations

Tomatoes – Seasonal Produce Guide

2022-09-28

USDA FNS SNAP-Ed • USDA SNAP-Ed

Revised exposure assessment for lycopene as a food colour

2010-01-30

EFSA Panel • EFSA Journal

EFSA assesses safety of lycopene in foods

2008-04-14

EFSA • EFSA Journal (news summary)

Tomato Allergy: The Characterization of the Selected Allergens

2022-04-27

Włodarczyk K., et al. • PMC (MDPI/Reviews & Research)

Food: greenhouse gas emissions across the supply chain (Poore & Nemecek dataset)

2025-09-03

H. Ritchie; J. Roser; Poore & Nemecek data • Our World in Data

How tomatoes reached (and scared) Europe

2025-04-09

Smithsonian staff • Smithsonian Magazine

Effect of operational parameters on physicochemical properties of spray-dried tomato powder

2019-09-01

Sidhu G.K., et al. • Journal of Food Processing and Preservation

Monash University update: tomato and bell pepper – limited low FODMAP

2022-03-06

Karlijn • Karlijn’s Kitchen (Monash app summary)