Tomato paste is one of the healthiest pantry staples you can keep on hand. It concentrates the nutrients found in raw tomatoes into a dense form, and the heat processing it undergoes actually increases the bioavailability of lycopene, its most studied beneficial compound. The evidence supporting regular consumption spans cardiovascular health, inflammation, skin protection, and even bone density, though a few practical caveats around sodium, acid reflux, and packaging deserve attention.
Why Processing Makes Tomato Paste More Nutritious, Not Less
Most people assume that cooking or processing a vegetable strips away its goodness. With tomatoes, the opposite happens for the nutrient that matters most. Lycopene, the red pigment responsible for much of the tomato’s health reputation, shifts into forms the body absorbs more easily when exposed to heat. During the cooking and concentration process used to make paste, lycopene molecules rearrange from their natural all-trans shape into cis-isomers, which pass through the intestinal wall far more readily.1PubMed Central. Comparative Analysis of Lycopene Content from Different Tomato-Based Food Products on the Cellular Activity of Prostate Cancer Cell Lines One human feeding study found that a tomato sauce rich in cis-isomers produced more than 55% greater total lycopene absorption compared to a nearly identical sauce dominated by the all-trans form.2British Journal of Nutrition. Lycopene from heat-induced cis-isomer-rich tomato sauce is more bioavailable than from all-trans-rich tomato sauce in human subjects
This is why researchers consistently note that absorption of lycopene is higher from processed tomato foods like paste and heated sauces than from a fresh tomato on your cutting board.3The Journal of Nutrition. A Food-Based Formulation Provides Lycopene with the Same Bioavailability to Humans as That from Tomato Paste The concentration process also means you get more lycopene per spoonful: a tablespoon of tomato paste packs several times the lycopene of a whole fresh tomato. Other antioxidants like tocopherol (vitamin E) hold up well through processing too, though vitamin C takes more of a hit from the heat.4Acta Horticulturae. HEAT TREATMENT EFFECTS ON THE BIOCHEMICAL AND NUTRITIONAL CONTENT OF DOUBLE CONCENTRATE TOMATO PASTE
How Dietary Fat Boosts What You Absorb
Lycopene is fat-soluble, which means eating tomato paste with some dietary fat dramatically improves how much your body takes in. This is not a minor detail. Research confirms that both genetic variation and the amount of fat in a meal influence lycopene absorption and its downstream health effects.5PubMed Central. Lycopene: A Critical Review of Digestion, Absorption, Metabolism, and Excretion The practical upshot is that the traditional Mediterranean approach of cooking tomato paste in olive oil is close to ideal from a nutrition standpoint.
The ingredients you pair with tomato paste matter beyond just fat. Traditional dishes like sofrito, which combine tomato with onion, garlic, and oil, appear to further promote the conversion of lycopene into its more absorbable cis forms. Research into these ingredient combinations found that allium vegetables like onion and garlic, as well as cruciferous vegetables like cabbage, all enhance this conversion.6Scientific Reports. Enhanced Z-isomerization of tomato lycopene through the optimal combination of food ingredients So the classic slow-simmered tomato sauce your grandmother made was doing more nutritional work than anyone realized at the time.
Cardiovascular Benefits
The heart and blood vessel evidence for tomato paste is among the strongest in the research. A trial in healthy people found that daily tomato paste consumption for 15 days improved endothelial function, which is essentially how well your blood vessels dilate when they need to. The group eating tomato paste saw their flow-mediated dilation improve by about 3.3 percentage points, while the control group’s actually declined slightly.7PubMed. Tomato paste supplementation improves endothelial dynamics and reduces plasma total oxidative status in healthy subjects That matters because stiff, poorly responsive blood vessels are an early step on the road to heart disease.
Separately, a study looking at what happens right after a fatty meal found that adding tomato paste modified several hemodynamic parameters triggered by the meal, suggesting some protective buffering of the cardiovascular stress that a heavy meal can cause.8PubMed Central. Positive Effects of Tomato Paste on Vascular Function After a Fat Meal in Male Healthy Subjects Animal research has also shown that tomato paste consumption over eight weeks led to large drops in markers of oxidative damage while boosting the activity of the body’s own antioxidant enzymes.9PubMed. Characterizing the lipid-lowering effects and antioxidant mechanisms of tomato paste The cumulative picture is that tomato paste helps protect blood vessels from the kind of oxidative stress that contributes to atherosclerosis.
Tomato Paste and Prostate Cancer Risk
Prostate cancer is where the tomato–lycopene connection has received the most research attention, and the findings are genuinely encouraging even if they fall short of calling tomato paste a cancer treatment. A systematic review and meta-analysis pooling data from multiple observational studies found that people with the highest tomato intake had roughly a 14% lower risk of prostate cancer compared to those who ate the least.10PubMed Central. Tomato consumption and prostate cancer risk: a systematic review and meta-analysis A separate dose-response meta-analysis found a similar pattern and specifically noted that cooked tomato products and sauces were associated with about a 16% risk reduction.11Prostate Cancer and Prostatic Diseases. Processed and raw tomato consumption and risk of prostate cancer: a systematic review and dose–response meta-analysis
A small clinical trial took a more direct approach: men with benign prostate hyperplasia ate 50 grams of tomato paste daily for ten weeks, and their PSA levels (a marker linked to prostate growth and cancer progression) dropped by about 11%.12PubMed. Effect of the consumption of tomato paste on plasma prostate-specific antigen levels in patients with benign prostate hyperplasia The researchers were careful to note this was not a cancer prevention study, but the finding suggests tomato paste has a measurable biological effect on the prostate. None of this means you should rely on tomato paste instead of screening or medical advice, but as a dietary habit, regular consumption of cooked tomato products appears to nudge the odds in a favorable direction.
Fighting Inflammation After Meals
Every time you eat a large or fatty meal, your body experiences a temporary surge in inflammation and oxidative stress. This postprandial inflammation, repeated meal after meal over years, contributes to chronic disease. Tomato paste appears to blunt this response meaningfully. A trial in healthy men and women found that adding processed tomato to a high-fat meal significantly reduced oxidation of LDL cholesterol and the rise in the inflammatory marker IL-6.13PubMed. Protective activity of processed tomato products on postprandial oxidation and inflammation: a clinical trial in healthy weight men and women
More recent work in healthy adult men confirmed and extended these findings: when tomato puree was added to a high-fat meal, multiple inflammatory markers in both the blood and fat tissue itself dropped compared to the same meal without tomato. The inflammatory cytokines TNF-α, IL-6, and CCL-2 all fell, and gene expression of inflammatory signals in adipose tissue was suppressed.14PubMed Central. Tomato Puree Enrichment in a High‐Fat Meal Reduces Postprandial Plasma and Adipose Tissue Inflammation Biomarkers in Healthy Male Adults: A Crossover Randomized Controlled Trial A broader meta-analysis of clinical trials found that while tomato intake did not consistently lower all inflammation markers, it did significantly reduce TNF-α, one of the body’s key inflammatory signals.15PubMed. Effect of tomato consumption on inflammatory markers in health and disease status: A systematic review and meta-analysis of clinical trials The takeaway is practical: stirring some tomato paste into a rich dish is not just about flavor. It genuinely changes what happens in your bloodstream and tissues afterward.
Skin Protection from UV Damage
One of the more surprising benefits of tomato paste involves your skin. A controlled trial had one group of volunteers eat about 40 grams of tomato paste (mixed with olive oil) daily for ten weeks while the control group got only olive oil. At the end of the study, the tomato paste group showed 40% less skin reddening after UV light exposure compared to the controls.16PubMed. Dietary tomato paste protects against ultraviolet light-induced erythema in humans A second randomized trial confirmed this photoprotective effect: volunteers consuming tomato paste had significantly higher tolerance to UV-induced skin damage, measured by the amount of UV energy needed to provoke reddening.17British Journal of Dermatology. Tomato paste rich in lycopene protects against cutaneous photodamage in humans in vivo: a randomized controlled trial
To be clear, this is modest internal sun protection, not a replacement for sunscreen. The effect is roughly equivalent to a very low SPF. But as an added layer of defense for people who spend time outdoors, it is a real and measurable benefit from a food that costs almost nothing.
Bone Density and Osteoporosis
Lycopene’s potential role in bone health is less well known but worth paying attention to, particularly for postmenopausal women who face accelerating bone loss. A pilot clinical study found that women who consumed tomato sauce regularly did not experience significant bone density loss over the study period, while the control group did.18PubMed Central. Lycopene and bone: an in vitro investigation and a pilot prospective clinical study Separately, a study of postmenopausal women supplemented with lycopene for four months found significant decreases in a bone resorption marker called NTx, alongside increased antioxidant capacity and reduced oxidative stress.19PubMed. Supplementation with the antioxidant lycopene significantly decreases oxidative stress parameters and the bone resorption marker N-telopeptide of type I collagen in postmenopausal women
The mechanism appears to involve lycopene’s ability to suppress the cells that break down bone while promoting the activity of bone-building cells. These are still relatively small studies, and no one is suggesting tomato paste should replace osteoporosis medications. But adding it regularly to your diet sits comfortably in the “cheap, safe, and potentially helpful” category for bone health.
Early Signals for Brain Health
Research on lycopene and cognitive function is more preliminary but heading in an interesting direction. In aged mice, lycopene supplementation reduced neuroinflammation, reversed age-related neuronal damage, and improved performance on memory and cognitive tests.20PubMed. Lycopene Supplementation Attenuates Oxidative Stress, Neuroinflammation, and Cognitive Impairment in Aged CD-1 Mice A narrative review examining the broader evidence on tomatoes and dementia noted that while cell and animal studies are promising, human intervention data remain limited. The review found that increasing tomato intake in humans appeared to improve both cardiovascular markers and cognitive performance, and called for more targeted human trials.21PubMed. A narrative review on the potential of tomato and lycopene for the prevention of Alzheimer’s disease and other dementias This is an area where the evidence is suggestive rather than conclusive, but given that eating tomato paste carries essentially no risk, it is worth noting as a possible long-term benefit.
Potential Downsides and Who Should Be Careful
Tomato paste is acidic, and that acidity can be a problem for people with gastroesophageal reflux. Research on esophageal sensitivity found that patients with acid-sensitive esophaguses reacted strongly to tomato drink, and this sensitivity persisted even when the drink was adjusted to a neutral pH, suggesting that components beyond just the acid are involved.22Gastroenterology. Food sensitivity in reflux esophagitis If you have reflux, you probably already know that concentrated tomato products can be a trigger. This does not mean tomato paste is unhealthy for you, just that it may worsen an existing condition.
Sodium and added sugar are the other practical concerns. Many commercial tomato-based products contain both. A survey of processed fruit and vegetable products found that more than 60% contained added sugar, and a large majority of vegetable-based sauces contained added sodium.23PubMed Central. Added sugar and sodium levels in New Zealand processed fruit and vegetable-based products Pure tomato paste, however, often contains only tomatoes and sometimes a small amount of salt. Reading the label matters: look for products with tomatoes as the sole ingredient, or at least check that sodium is in the low hundreds of milligrams per serving rather than approaching the levels found in sauces and soups.
Canned Paste and Packaging Concerns
Because tomato paste is acidic, it can promote migration of chemicals from can linings into the food. Bisphenols, the chemicals used in the epoxy resin coatings inside many metal cans, are the primary concern. Research has identified canned tomato paste as a potentially meaningful dietary source of bisphenol exposure due to this migration effect.24Journal of Hazardous Materials Advances. Occurrence of bisphenols in commercial canned tomato paste in the United Arab Emirates and associated dietary exposure and health risk assessment Testing of canned tomato products from Italian markets found that under normal storage conditions, bisphenol A migration levels stayed quite low, but heating and physical damage to cans (like denting) significantly increased migration.25PubMed. Migration of bisphenol A into canned tomatoes produced in Italy: dependence on temperature and storage conditions
Heavy metals in canned paste have also been studied. One investigation found that cadmium levels in canned tomato paste were below international safety limits, but lead levels exceeded the acceptable threshold.26Scientific Reports. Investigation of heavy metal levels in canned tomato paste, olives, and pickled If these concerns matter to you, practical solutions exist: buy tomato paste in glass jars or tubes rather than cans, avoid dented cans, and do not store opened cans with remaining paste in the refrigerator. Many brands now sell paste in BPA-free packaging or in squeezable tubes that sidestep the issue entirely.
Metabolic Effects Beyond Antioxidants
Emerging research hints that tomato paste’s benefits extend to metabolic health in ways that go beyond simple antioxidant activity. Lab and animal studies have found that tomato paste extract reduced fat accumulation in liver cells, increased fatty acid oxidation, and improved both glucose tolerance and insulin sensitivity in mice after a single dose.27PubMed Central. Effects of tomato ketchup and tomato paste extract on hepatic lipid accumulation and adipogenesis These findings are from cell cultures and animals, so translating them directly to humans requires caution. Still, the direction is consistent with the cardiovascular and anti-inflammatory evidence: tomato paste appears to favorably affect several metabolic pathways that collectively influence the risk of chronic disease.
For people managing blood sugar or watching their weight, tomato paste is also a practical win because it delivers intense flavor for very few calories. A tablespoon contains roughly 13 calories, negligible fat, and a small amount of natural sugar. It is one of the easiest ways to make simple dishes taste rich and satisfying without adding calorie-dense ingredients, which is a legitimate health benefit even though it has nothing to do with lycopene.
How Much to Eat and How to Use It
Most of the studies showing benefits used the equivalent of somewhere between a tablespoon and a quarter cup of tomato paste per day, consumed consistently over weeks. There is no official recommended dose, but working a few tablespoons into your regular cooking is enough to put you in the range used in clinical research. You do not need to eat it by the spoonful. Stirring a tablespoon or two into soups, stews, grain bowls, pasta sauces, or even scrambled eggs works fine.
One underused trick is to cook the paste in oil for a minute or two before adding other liquids. This step, common in professional kitchens, caramelizes the sugars in the paste and deepens the flavor, but it also heats the lycopene in fat, which is exactly the combination that maximizes absorption. Spreading tomato paste on toast with a drizzle of olive oil, common in parts of the Mediterranean, is another simple approach. The evidence is clear that the fat-plus-heat combination is what unlocks the most nutritional value, and fortunately, that also happens to be what makes tomato paste taste best.