One potential alternative food source – both for humans and the animals we eat – is algae. ... Humans have eaten macroalgae, like wakame and nori seaweed, for thousands of years.

Is algae safe to eat?

Algae contains high levels of calcium, iron, vitamins A, C, and K, potassium, selenium, and magnesium. Most importantly, it is one of the best natural sources of iodine, a nutrient that is missing from most other foods, and is also essential for a healthy functioning thyroid gland.

What happens if u eat algae?

Drinking algae-affected water or consuming food (such as fish or shellfish) containing toxins can lead to gastroenteritis, which can induce vomiting, diarrhoea, fevers and headaches. These toxins may also affect the liver or nervous system. ... Pets and livestock can also be affected by harmful algae.