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.
Thyroid problems can develop for a number of reasons, but the most common causes of thyroid problems are nutrient deficiencies such as iodine and selenium deficiency, autoimmune disease, genetics, stress and environmental factors. The most common type of thyroid problem is hypothyroidism (under active gland).