What Are Tomatoes Good For?
Tomatoes originally grew wild in South America, eventually making their way to Central America where the Aztecs and Mayans ate them. Their spread to other parts of the world is thanks to the Spanish, who brought the plant to Europe, paving the way for it to become a valued commodity.1,2
There are hundreds of varieties of tomatoes, from tiny, snack-sized types like grape and cherry, to the large heirloom tomato variants, such as the Cherokee purple and Homestead.3,4 The colors largely vary across cultivars, with shades ranging from yellow to red.5 They can be eaten raw, added to soups or stewed and made into sauces.6
A mistake most people make when handling tomatoes is refrigerating them to “prolong” their shelf life. Doing this actually makes tomatoes mushy and mealy.7 Research also shows that refrigerating tomatoes diminishes their flavor.8
Health Benefits of Tomatoes
One of the amazing things about tomatoes is the wide variety and quantity of nutrients they provide. They don’t just taste good — they’re good for you too, supplying excellent amounts of fibre, vitamins A, C and K, potassium and phosphorus, as well as trace amounts of iron, zinc, vitamin E, niacin and folate.9
The surplus of nutrients leads to the following health benefits of tomatoes:
- Supporting cardiovascular health — According to a 2003 review from Critical Review of Food Science and Nutrition, tomatoes contain nutrients that may help protect vascular cells from oxidation, shielding you from atherosclerosis.10
- Helping preserve eye health — A 2013 review from the Journal of Pharmacognosy and Phytochemistry showed that optimizing lutein and zeaxanthin levels helps protect patients from age-related macular degeneration and cataract formation.11
- Easing menopausal symptoms — A 2015 study from the Journal of Nutrition showed that the consumption of tomato juice helps to significantly reduce menopausal symptoms, including anxiety, increased heart rate and resting energy expenditure.12
Tomatoes nutrition facts
Serving Size: 3.5 ounces (100 grams), red, ripe, raw13
Amt. Per Serving | % Daily Value* | |
---|---|---|
Calories | 18 | |
Calories from Fat | ||
Total Fat | 0.20 g | |
Saturated Fat | 0.028 g | |
Trans Fat | 0 g | |
Cholesterol | 0 mg | |
Sodium | 5 mg | |
Total Carbohydrates | 3.89 g | |
Dietary Fiber | 1.2 g | |
Sugar | 2.63 g | |
Protein | 0.88 g | |
Vitamin A 42 µg | Vitamin C | 13.7 mg |
Calcium 10 mg | Iron | 0.27 mg |
Studies Done on Tomatoes
In a study published in the Cancer Epidemiology, Biomarkers and Prevention, tests indicated that tomatoes may be a preventive factor against prostate cancer, especially when ingested in larger amounts.14
We hear a lot about flavanoids and antioxidants being able to neutralize harmful free radicals in the body. Lycopene is an antioxidant that plays a large role in the benefits that tomatoes offer.15 A 2006 study from Photochemical and Photobiological Sciences showed that regular consumption of lycopene-rich food led to the decreased risk of ultraviolet damage.16
A 2018 study from Frontiers in Pharmacology has also linked lycopene to improved cardiovascular health due to its antiatherosclerotic, antioxidant and antihypertensive properties.17
Lack of lycopene intake may put your health at risk. Researchers conducted studies to determine the effects of withholding lycopene from the diet of 23 postmenopausal women for a month. Results showed not only depleted lycopene levels, but significantly lowered lutein, zeaxanthin, carotene, enzymatic superoxide dismutase, catalase and glutathione peroxidase levels as well. These findings showed lycopene’s importance in helping maintain bone density and reducing the risk for osteoporosis.18
However, there have been numerous issues concerning canned tomatoes due to the use of bisphenol A (BPA) in packaging. BPA is a chemical used in flame retardants, polycarbonates and epoxy resins used to line cans to stop direct contact between the metal and the food material.
Studies have shown that BPA can be transferred to food, leading to prolonged exposures in humans through consumption. BPA has also been linked to cancer, infertility and obesity in different age groups.19 In a study from Expert Review of Obstetrics and Gynecology, it was discussed that BPA interfered with the production of reproductive hormones, semen quality and implantation odds in women who underwent in-vitro fertilization.20
Tomato Healthy Recipes:
Fresh and Chunky Gazpacho
Ingredients: | |||
3 cups chopped tomatoes | 1 cup chopped cucumber, peeled and seeded | 2/3 cup finely chopped yellow onion | 1/2 cup each chopped red and yellow bell pepper and celery |
2 teaspoon olive oil | 2 teaspoon horseradish | 2 teaspoon balsamic vinegar | 2 teaspoon brown rice vinegar |
1/4 teaspoon sea salt | 2 cups tomato juice | 1/4 teaspoon fresh black pepper | 1 clove garlic, minced |
Garnish: | ||
1/4 cup plain yogurt, or plain non-fat yogurt | 1/4 cup chopped fresh cilantro | 1/2 avocado, chopped |
Procedure:
- In a large bowl, combine all ingredients, except garnish items.
- Cover and chill at least two hours or overnight.
- Serve in chilled bowls and top each serving with a dollop of yogurt, 1 tablespoon of cilantro and a few avocado pieces.
(Adapted from “Healthy Recipes for Your Nutritional Type” by Dr. Joseph Mercola)
Tomatoes Fun Facts
In the Middle Ages, wealthy people often ate from pewter plates, but foods with a high acid content, like tomatoes, caused some of the lead to leach into the food, resulting in lead poisoning and death. For the next 200 years or so, tomatoes were considered toxic.21
Summary
A multiplicity of varieties and preparations make tomatoes one of the most anticipated hallmarks of summer. The lycopene content alone is enough to make tomatoes one of the healthiest natural foods. Cardiovascular support and bone health are two functions the phytonutrients tomatoes provide, but their ability to cut cancer risks is also well-documented.
How fortunate we are to have such a delicious, versatile vegetable (fruit, technically) to enliven the dishes we prepare — not just for enjoyment, but for life!
References:
- 1 The Spruce Eats, “The History of Tomatoes as Food,” January 16, 2019
- 2 Biotechnol Adv. 2014 Jan-Feb;32(1):170-89.
- 3 The Kitchn, “7 Types of Tomatoes You’ll Find at the Market (and What They Taste Like)” August 8, 2017
- 4 The Spruce Eats, “Tomatoes: An Essential Ingredient in Spanish Cuisine,” November 13, 2019
- 5 The Spruce Eats, “A Simple Guide to Tomato Varieties by Color,” May 26, 2019
- 6,7 The Spruce Eats, “How to Select and Cook With Tomatoes,” March 25, 2020
- 8 Proc Natl Acad Sci U S A. 2016 Nov 1;113(44):12580-12585
- 9,13 USDA FoodData Central, Raw Ripe Red Tomatoes
- 10 Crit Rev Food Sci Nutr. 2003;43(1):1-18
- 11 Journal of Pharmacognosy and Phytochemistry 2013 May, 2(1)
- 12 Nutr J. 2015 Apr 8;14:34. doi: 10.1186/s12937-015-0021-4
- 14 Cancer Epidemiol Biomarkers Prev. 2004 Mar;13(3):340-5
- 15 Crit Rev Biotechnol. 2000;20(4):293-334
- 16 Photochem Photobiol Sci. 2006 Feb;5(2):238-42
- 17 Front Pharmacol. 2018; 9: 521
- 18 J Nutr Health Aging. 2011 Feb;15(2):133-8
- 19 Comprehensive Reviews in Food Science and Food Safety 17(6), 2018
- 20 Expert Rev Obstet Gynecol. 2013 Jul 1; 8(4)
- 21 Smithsonian.com, 2013