According to WebMD, contaminated spirulina can cause the following: liver damage, stomach pain, nausea, vomiting, weakness, thirst, rapid heartbeat, shock, and even death. Also, some sources suggest that pregnant women and children should not consume algae.
Does spirulina Block B12 absorption?
Partially. In fact they do contain adequate amounts of B12, but it is pseudo-B12! It is an analog of the actual cobalamin molecule so it will unfortunately inhibit B12 utilization in the body.
Is spirulina good for weight loss?
Although caloric restriction and exercise are the mainstay treatments for obesity, spirulina has shown significant benefits in aiding weight loss.
How much spirulina should I take daily?
In general, 1-8 g per day of spirulina has been shown to have some effect. The specific doses depend on the condition its being used for: For cholesterol, doses in the range of 1-8 g per day may be impactful. For muscle performance, doses of 2-7.5 g per day have been used.