Calories and Nutritions in Squid

Squid provides some health benefits like supporting cellular health and offering high-quality protein due to its rich composition of essential minerals, vitamins, and lean protein. A list of the squid fish benefits are shown below.

• Lean Protein Source: Squid is a great source of high-quality protein, offering 15.6g per 100g (31% DV) in its raw state. Protein is vital for building and repairing tissues, muscle maintenance, and producing enzymes and hormones, all with a relatively low fat content.
• Rich in Essential Minerals: One of the key benefits of squid fish is its mineral content. It is exceptionally rich in copper, providing 1.89mg per 100g raw (210% DV), which is essential for iron metabolism and energy production. It is also an excellent source of selenium, an antioxidant, providing 44.8µg per 100g raw (81% DV). (Rayman, M.P., 2012, "Selenium and human health").
• Good Source of B Vitamins: Squid provides significant amounts of several B vitamins. A 100g raw portion contains 0.412mg of Riboflavin (Vitamin B2) (32% DV) and 1.3µg of Vitamin B12 (54% DV), which are crucial for energy metabolism and nerve function.
• Contains Omega-3 Fatty Acids: Squid is a good source of the beneficial omega-3 fatty acids EPA and DHA, providing 0.5g (500mg) per 100g raw. These fats are known to support heart health and brain function. (Mozaffarian, D. & Rimm, E.B., 2006, "Fish intake, contaminants, and human health: evaluating the risks and the benefits").
• Provides Phosphorus and Zinc: It contains a good amount of phosphorus, with 221mg per 100g raw (32% DV) for bone health, and zinc, a mineral that plays a key role in immune function.
• Source of Choline: Squid provides 65mg of choline per 100g raw. Choline is an important nutrient for brain health, memory, and nervous system function.
• Low in Calories (when not fried): When steamed or boiled, squid is a low-calorie protein source. A 100g serving of raw squid contains only 92 calories, making it a nutrient-dense food choice.

Squid has been known to cause some unwanted effects like a high cholesterol content and the potential for allergic reactions due to its nature as a mollusk. A list of the downsides of squid are shown below.

• High in Dietary Cholesterol: Squid is notably high in dietary cholesterol, containing 233mg per 100g raw (78% DV). While the impact of dietary cholesterol on blood cholesterol levels is less of a concern for most people than saturated fat, individuals with specific health conditions may need to limit their intake. (Grundy, S.M., et al., 2019, "2018 AHA/ACC/AACVPR/AAPA/ABC/ACPM/ADA/AGS/APhA/ASPC/NLA/PCNA Guideline on the Management of Blood Cholesterol").
• Shellfish Allergies: Squid is a cephalopod mollusk, and allergies to squid, while less common than crustacean allergies, can occur and may be severe. Individuals with a known shellfish allergy should be cautious.
• Often Prepared by Frying (Calamari): The most popular method of preparing squid is deep-frying it as calamari. This preparation method significantly increases the calorie count to 175 per 100g and adds 7.5g of fat and 306mg of sodium (13% DV), making it a much less healthy option.
• Potential for Heavy Metal Contamination: Like many marine animals, squid can accumulate heavy metals, such as cadmium, from their environment. While levels in commercially sourced squid are generally monitored, it is a factor to consider, especially with squid from polluted waters. (Storelli, M.M., et al., 2010, "Trace metals in tissues of cephalopods from the Mediterranean Sea").

Yes, squid can be good for you when prepared in a healthy way and consumed in moderation. It is a nutrient-dense seafood, offering high-quality protein, beneficial omega-3 fatty acids, and an excellent source of essential minerals like copper, selenium, and phosphorus, as well as B vitamins. (USDA FoodData Central, "Mollusks, squid, mixed species, raw"). These nutrients contribute to heart health, cellular protection, and energy metabolism. The primary nutritional concern is its high dietary cholesterol content. However, for most healthy individuals, dietary cholesterol has a smaller impact on blood cholesterol than saturated fat, and squid is low in saturated fat. (McNamara, D.J., 2000, "Dietary cholesterol and atherosclerosis"). The healthfulness of squid is heavily dependent on the cooking method; steamed, grilled, or boiled squid is a lean, low-calorie choice, while deep-fried calamari is high in fat and calories and should be eaten sparingly.

The calorie content of squid changes based on its preparation method, particularly the amount of water and added fat. Raw squid is the lowest in calories among the unprocessed forms, containing 92 calories per 100g due to its high water content. When squid is cooked with moist heat like steaming or boiling, it loses some water, which concentrates the nutrients and increases the calorie density to 153 calories per 100g. The most significant calorie increase comes from frying; breaded and fried squid (calamari) contains 175 calories per 100g, with the added calories coming from the breading (carbohydrates) and absorbed cooking oil (fat). The highest calorie form is dried squid, which has had nearly all its water removed. This dehydration process makes it extremely dense in protein and calories, containing 350 calories per 100g. Other forms, like squid ink (79 calories per 100g) and processed squid balls (93 calories per 100g), have their own distinct caloric values based on their unique compositions.

Squid has a savory and oceanic flavor profile that is incompatible with the sweet characteristics expected in desserts. There are no known or established dessert dishes that feature squid as an ingredient.

Yes, boiling (or steaming) calamari retains more of its original nutritional value compared to deep-frying. When calamari is fried, it is coated in a breading or batter that adds carbohydrates and absorbs a significant amount of cooking oil. This process increases the fat and calorie content of the dish. For example, 100g of boiled or steamed squid contains 153 calories and less than 2g of fat, while 100g of fried calamari contains 175 calories and 7.5g of fat.

High-heat cooking methods like deep-frying can also lead to the degradation of some heat-sensitive nutrients, such as certain B vitamins and delicate omega-3 fatty acids. (Sathivel, S., et al., 2004, "The effects of smoking and canning on the nutritional composition of pink salmon (Oncorhynchus gorbuscha)"). In contrast, boiling or steaming is a gentler, moist-heat cooking method that does not add external fats or carbohydrates. While some water-soluble nutrients might leach into the cooking liquid, this method better preserves the lean, high-protein nature of the squid. (Weber, J., et al., 2008, "The effect of different cooking methods on the nutritional quality of farmed salmon (Salmo salar)").

The origin of squid as a food source is ancient, with coastal populations around the world, particularly in the Mediterranean and East Asia, harvesting and consuming it for thousands of years. Its presence is documented in ancient Greek and Roman texts. Aristotle wrote about the biology of cephalopods, and the Roman gourmand Apicius included recipes for squid in his cookbook. For centuries, it was a staple, affordable protein for fishing communities in countries like Italy, Spain, Greece, China, and Japan.

A popular dish that highlights squid's deep roots in Mediterranean culinary culture is "Fried Calamari." The practice of frying seafood is common throughout the Mediterranean. The dish, consisting of squid rings and tentacles lightly floured or battered and quickly fried until golden and crisp, is a beloved appetizer ("antipasto" in Italy, "meze" in Greece, "tapa" in Spain) across these cuisines. Its modern popularity, particularly in the United States, surged in the latter half of the 20th century. 

Restaurants in coastal Italian-American communities, like those in New York and Rhode Island, played a significant role in popularizing fried calamari, transforming it from a rustic fisherman's meal into a ubiquitous and beloved restaurant starter.