The health and nutrition debate on whether to eat raw or cooked food rages on. Though some foods retain better nutritional and sensory properties if they are eaten raw, others retain better nutrients if cooked. Depending on the nutrients and food involved, research proves that whether raw or cooked food is the best is a question of judgment. For example, a study published in the Journal of Agriculture and Food Chemistry discovered that cooked tomatoes have an increased lycopene bioavailability- which is an antioxidant that can reduce heart diseases. Carrots, too, are better when cooked since that way the beta-carotene can be better digested. Vitamin C levels and digestive enzymes are preserved in most raw foods. Yet, its raw spinach contains much higher amounts of vitamin C values. Whereas cooking reduces oxalates that enhance calcium and iron. According to the American Journal of Clinical Nutrition, to maximize the intake of nutrients and promote health, it suggests having a balanced diet, that is, both raw and cooked food. Here, we have used the example of four vegetables that can help you understand.
AsparagusAsparagus contains high amounts of vitamins A, C, E, and K, and is a good source of folate and dietary fibre; it also has antioxidant properties and beneficial phytochemicals.
Raw vs. Cooked: Cooking increases the availability of nutrients in asparagus. Various research has explained how cooking breaks the hard cell walls, thereby making it easy for the human body to extract most of the contained antioxidants, for example, ferulic acid easily. Steaming and light sauteing enhance the antioxidant activity in asparagus without decreasing its vitamin content. Well, cooking is better as it improves nutrient absorption, but not over-cooked, as vitamins will be used up.
TomatoTomatoes are rich in vitamins C and K, potassium, and lycopene, an antioxidant that has been proven to lower the risk of heart disease and various cancers.
Raw vs. Cooked: Thermal treatment significantly increases the bioavailability of lycopene in tomatoes. It has been reported in the Journal of Agriculture and Food Chemistry that cooking tomatoes at 190°F for 30 minutes will increase their lycopene level above 30%, although vitamin C decreases slightly. Hence, the slight drop in vitamin C is negligible when considering the increased availability of lycopene, making cooked tomatoes exceptional sources of antioxidants. Cooked tomatoes have higher amounts of lycopene, which are also more antioxidative.
SpinachSpinach is a powerhouse of nutrients. Rich in vitamins A, C and K, iron, and calcium. It contains oxalates which can interfere with the absorption of many minerals.
Raw vs. Cooked: Compared to raw spinach, cooking destroys a large amount of oxalate, which, in turn, makes minerals such as iron and calcium more readily absorbed. More of its beta-carotene is released through cooking, and a greater portion of folate is retained. Vitamin C content is partially lost with high temperatures. Generally, the cooked form of spinach is a better mineral and beta-carotene absorber. Steaming or sauteing best achieves this.
CarrotCarrots, rich in beta-carotene, comprise a converted carotenoid in the body into vitamin A. This maintains healthy eyes and immune functions. In addition, carrots contain fibres and antioxidants.
Raw vs. Cooked: Cooking carrots breaks the cell walls and increases the availability of beta-carotene. According to the Journal of Agricultural and Food Chemistry, boiled or steamed carrots absorb more beta-carotene compared to raw ones. The fibre is largely intact, and most of the nutrients are preserved with mild cooking methods. Carrots that have been boiled are better for increased beta-carotene absorption, although lightly cooked retains other nutrients.
Raw-to-cooked foods balanceWhile some vegetables, like tomatoes, carrots, asparagus, and spinach, are better cooked to release key nutrients, ideally, a mix of raw and cooked will be consumed. Cooking makes certain antioxidants and minerals available while raw foods might retain more vitamin C and digestive and immune enzymes.
Tips to maximize nutrient consumptionDo not overcook: Steam, saute, or lightly boil for minimum loss of vitamins and minerals.
Add healthy fats: Cooking vegetables with healthy fats, such as olive oil or avocado, will further augment the absorption of fat-soluble vitamins and antioxidants.
Include a mix: Offer mixed raw and cooked vegetables to provide the greatest nutritional range.
Raw and cooked depends on the vegetables, and which one offers better nutrient maximization. Among these, some vegetables that become more nutritional when cooked include asparagus, tomatoes, spinach, and carrots. All these are the most valuable components in a varied diet. This understanding helps in preparing balanced meals with the best nutrient-rich foods for optimum health.
(Image courtesy: Canva)