Marine algae: properties, contraindications, price, where to buy

Green, slimy and... can provide vitamins? That's right. Although algae do not look quite so pleasant at first glance, certain types of algae are particularly valuable for health.

That is why, together with nutritionist Jakub Pągowski, we will tell you about the health-promoting properties of seaweed.

See also:

• Chlorella
• Spirulina

Marine algae - what is it?

Marine algae is a generic name for a variety of species of photosynthesising organisms that mainly inhabit aquatic areas, primarily seas and oceans. Although the designation 'algae' suggests an affinity with plants, they are not formally classified as such. Marine algae represent a very diverse group, including algae, self-living protists, and marine cyanobacteriaand.

They are characterised by an unheard-of diversity in both size (from microscopic single-celled algae to giant marine algae such as kelp) and colour (green, brown, red) .

Marine algae are also a key component of marine ecosystems, providing food for many organisms and producing oxygen. Numerous species are also used, for example in the food or cosmetic industries.

What is the composition of algae?

Marine algae are a true treasure trove of health, offering a wealth of nutrients with numerous benefits. They contain protein, vitamins, ingredients minerals, fibre and valuable omega-3 fatty acids.

What are the types of marine algae?

Algae are a diverse group of organisms capable of photosynthesis. They are mainly classified by their colour, structure and cell arrangement. Types of algae include primarily blue-green, brown, red and green algae. What are the characteristics ofand?

• Blue-green algae. These prokaryotic organisms, also known as cyanobacteria, are bacteria that exhibit the ability to carry out photosynthesis. They produce oxygen and are responsible for the formation of harmful aquatic blooms that can adversely affect ecosystems.
• Brown algae. These algae are characterised by their large size, which can reach up to several tens of metres in length. The best known of these are the large kelps, which form undersea 'forests', providing habitat for many marine species. Brown algae are also a valuable source of algin, a substance used, among other things, in the food industry.
• Red algae. Many species of these algae are microscopic in size, but some can form large, macroscopic structures. They are an important source of agar and carrageenan, substances used in the food industry as thickening additives. Red algae also play a key role in marine ecosystems, providing a food source for many creatures.
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• Green algae. This is the most diverse group of algae, including both unicellular and multicellular forms. They are known for their adaptability, which allows them to live in a variety of ecosystems, such as freshwater, salt water or even humid land. Green algae are also a valuable source of protein and are used as dietary supplements.
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Marine algae - properties and effects

Marine algae are an extremely rich source of nutrients, which translates into many health benefits. Not only do they exhibit nutritional properties, but they also have a variety of therapeutic actions - from supporting the immune system, to improving skin condition, to regulating blood pressure. How exactly do marine algae work?

They support the immune system

Marine algae are an exceptional source of nutrients that support immune system health. They are rich in antioxidants, such as vitamin C and vitamin E, which neutralise harmful free radicals.

So their consumption helps protect cells from damage. By reducing oxidative stress, a diet rich in antioxidants can help provide strong immunity and reduce the risk of many diseasesand.

What's more, marine algae is an excellent source of zinc -a mineral crucial to immune function. Zinc is important for the production of new immune cells, improved wound healing and effective repelling of pathogens. In addition, studies have shown that seaweed nectar can stimulate the activity of macrophages, a type of white blood cell that helps fight infectionand.

Improve skin health

Marine algae play an important role in promoting skin health. They contain a range of nutrients that are key to its appearance, including antioxidants such as vitamins C and E and beta-carotene, which protect the skin from free radical damage. These antioxidants can help prevent premature skin ageing, reduce wrinkles and maintain skin firmnessand.

Marine algae is a true anti-acne weapon. Thanks to their antimicrobial properties, they help fight acne-causing bacteria, plus the fiber they contain supports digestive health, which is also important for healthy skin .

In addition, marine algae are known to be high in minerals such as copper, zinc and selenium, as well as vitamin C. These are valuable ingredients that are essential for the production of collagen -a protein that provides firmness and hydration to the skin. Regular consumption of seaweed or the use of seaweed-based cosmetics can help improve the health and appearance of the skinand.

Help regulate blood pressure

Marine algae are increasingly recognised for their ability to support heart health, including blood pressure regulation. They are a rich source of potassium, a mineral that helps regulate blood pressure by offsetting the negative effects of excessive sodium intake. Potassium also plays a key role in maintaining muscle tone and fluid balance in the bodyand.

Additionally, certain species of marine algae, such as brown alga, contain unique bioactive compounds called fucoidans, which have shown promising results in animal and human studies for lowering blood pressureand.

Finally, the fibre content of seaweed further helps to lower blood pressure, improving overall heart health. Although seaweed is not credited with treating hypertension, it can be an important dietary supplement for those struggling with the conditionand.

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Positive effects on heart function

Marine algae are a rich source of omega-3 fatty acids, which are crucial for heart function. Research suggests that omega-3s can help lower 'bad' LDL cholesterol, increase 'good' HDL cholesterol and lower triglycerides, which are strongly linked to heart disease riskand.

The fibre in marine algae helps regulate cholesterol levels in the body. High cholesterol levels can lead to the formation of atherosclerotic plaques, which increase the risk of heart attack and stroke. Fibre can help reduce this likelihood by helping the body 'trap' excess cholesterol and eliminate it from the bodyand.

As you already know, marine algae can also support blood pressure regulation, which is also important for heart health.

Promote the function of the digestive system

Marine algae are extremely rich in dietary fibre, which regulates intestinal function and improves the digestive process. By increasing its volume, it fills the digestive tract, which contributes to a longer feeling of satiety after a meal. This is particularly helpful on a reduction diet.

The fibre in marine algae stimulates intestinal peristalsis, which leads to more frequent and regular bowel movements and consequently prevents constipation. By taking in enough fibre (approx. 25 g per day), you ensure proper bowel function.

An additional benefit is the prebiotic content of algae. Prebiotics are a type of fibre that serves as 'food' for probiotics, or 'good bacteria' in the gut. Prebiotics from seaweed can help regulate the balance of the gut microbiome, which translates into improved health of the entire digestive systemand.

Use of marine algae

Marine algae are used extensively in a variety of fields -from small domestic applications to industrial ones. These endless possibilities are due to their diversity and versatilityand.

• Food and dietary supplements. Marine algae are a rich source of protein, vitamins and minerals. Therefore, they are added to a variety of dishes and also processed into dietary supplements.
• Cosmetic products. Due to their moisturising and nourishing properties, marine algae are widely used in the cosmetic industry. They are an ingredient in many creams, masks and other skincare products.
• Biofuels. Algae are a very good raw material for biofuel production. They contain large amounts of lipids, which are suitable for the production of third-generation biofuels.
• Medicines. Some types of algae have medicinal properties. They can therefore help to regulate blood pressure, improve thyroid function and many other aspects of health.
• Agriculture and fertilisers. Algae are also used in agriculture as organic fertilisers to improve soil structure and nutrient content.

Marine algae in the diet

Marine algae have long been a valued dietary ingredient in many cultures, particularly in Asia. Incorporating them into your daily menu can provide a range of health benefits. They are a rich source of many valuable nutrients, including protein, vitamins (especially group B and C), minerals (such as iodine and potassium), fibre, and essential omega fatty acidsand.

Eating algae also provides a natural source of iodine, which is essential for the proper functioning of the thyroid gland. Another important component of seaweed is fibre. It helps to regulate intestinal function, assists with blood glucose control and can contribute to maintaining a healthy body weight. Many seaweeds are also rich in antioxidants, which help prevent free radical damageand.

Finally, it is worth mentioning that marine algae is a balanced nutritional source that can be an excellent addition to a healthy, varied diet. However, as with all types of supplements, it is important to exercise moderation and be aware of potential side effects and contraindications.

Algae in the food industry

Genuine marine algae are increasingly being seen in the ingredients of various products in the food industry. They owe their popularity to their wealth of valuable nutrients and the variety of forms and flavours they offer. How to eat marine algae?

• Self-serve snacks. Dried eating algae, especially nori, are often eaten as a healthy snack that is low in calories and rich in a variety of nutrients.
• Sushi and snacks.
• Sushi and other Asian dishes. Algae are a key ingredient in many Asian dishes, including sushi. They are also used to wrap rice or as an ingredient in soups.
• Natural thickeners. Agar, derived from red algae, is a popular substitute for gelatine, used as a gelling agent in vegan and vegetarian products.
• Dietary supplements. You can also buy algae in tablet form or powder (for drinking) as a dietary supplement.
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• Dairy products and desserts. Algae are also used as stabilisers and thickeners in dairy products such as yoghurt and ice cream.
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