Cherry Tomatoes May Pack a Nutritional Punch Similar to Pricier Heirloom Varieties
Experts suggest that the 'skin-to-flesh' ratio in smaller tomatoes could make them a concentrated source of beneficial compounds, comparable to more expensive options.
Tomatoes, regardless of their price point or variety, are recognized as a nutrient-dense food, rich in lycopene, Vitamin C, and potassium. However, the specific nutritional profile can vary, with factors like color, size, shape, and ripeness playing a role, according to dieticians and nutritionists.
Lycopene, an antioxidant that gives tomatoes their red pigment, is linked to a reduced risk of heart disease and certain cancers, particularly prostate cancer. Research indicates that consuming 5-30mg of lycopene daily may help improve cardiovascular risk factors. A separate study found that men consuming 4.9mg of lycopene daily had a significantly lower risk of prostate cancer.
While all tomatoes contain lycopene, cherry tomatoes may offer a more concentrated source due to their higher skin-to-flesh ratio. Nutritionist Rob Hobson explains that many protective plant compounds are located just beneath the skin, which is exposed to sunlight and environmental stressors. This skin contains fiber, polyphenols, and flavonoids, all potent antioxidants. Because consumers tend to eat multiple cherry tomatoes at once, they proportionally consume more skin compared to eating a single larger tomato.
Tomatoes on the vine might also be higher in lycopene, as they are often picked at peak ripeness when these beneficial compounds are most abundant.
Preparing tomatoes can enhance the body's absorption of lycopene. Cooking breaks down the fruit's cell walls, making the compound more accessible. Furthermore, as lycopene is fat-soluble, consuming cooked tomatoes with a small amount of healthy fat, such as olive oil, can further boost absorption. One study showed that cooking tomatoes for thirty minutes increased lycopene absorption by 164% compared to raw tomatoes. However, cooking can reduce Vitamin C content, though experts note that Vitamin C is readily available from other food sources.
Beyond red varieties, other tomato colors offer distinct benefits. Yellow and orange tomatoes may contain less lycopene but higher levels of beta-carotene, which the body converts to Vitamin A, essential for immune function and vision. Deep purple, blue, or black tomatoes contain anthocyanins, compounds linked to cardiovascular and brain health, though typically in lower concentrations than in berries. Green tomatoes, specifically unripened ones, contain tomatidine, which animal studies suggest may help prevent muscle atrophy. Some experts note that while red tomatoes are excellent for lycopene, yellow varieties can be good for eye health due to lutein, and green tomatoes offer anti-inflammatory chlorophyll.
While tomatoes offer numerous health advantages, consuming them in excessive quantities is unlikely to yield additional benefits beyond regular inclusion in a balanced diet. Individuals experiencing acid reflux may need to consume tomatoes sparingly due to their acidity, particularly when stewed or boiled. Although rare, some people have allergies to tomatoes, but they may tolerate them when cooked.
Sources
- www.dailymail.com - Is a 90p pack of cherry tomatoes as nutritious as an 'heirloom' punnet that costs a fiver? Diet expert reveals the surprising variety that's the healthiest
- www.dailymail.com - Is a 90p pack of cherry tomatoes as nutritious as an 'heirloom' punnet that costs a fiver? Diet expert reveals the surprising variety that's the healthiest