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.
Stress impacts both the adrenal hormone pathway and the thyroid hormone pathway. Stress can cause inflammation in the brain/ hypothalamus, stress can raise cortisol levels that may inhibit or alter the metabolic pathway of active thyroid hormone (T3), or some other mechanism may be at play.