Fungi possess cell walls made of the glucosamine polymer chitin, and algae typically possess walls made of glycoproteins and polysaccharides. Unusually, diatoms have a cell wall composed of biogenic silica.
While stress does not appear to cause thyroid problems, a person with an overactive thyroid would typically be anxious and could definitely feel more stressed than usual. Also, if you take thyroid hormone pills for an underactive thyroid gland, your dose may be too high.
When we are stressed and our life is out of balance, it can manifest in our physical bodies in such ways as hormone imbalance, which can also lead to unbalanced brain chemistry, most commonly serotonin deficiency, low thyroid function, and over-stressed adrenal glands, all of which can affect our mood and cause anxiety.