Because it can cause serious infections in the lungs, blood and our brains...It may also cause urinary tract and infections in wounds.
        
                    
             
        
        
        
No, but it is known that old/sick prey is much easier to catch. The evidence is that, say, there's no old and sick prey. The predator has to eat regardless, and whatever is there for it to take, it will. Think of a lion and a zebra, and the zebra is eating grass in the middle of a field. The lion is going to take that chance.
        
                    
             
        
        
        
Less triiodothyronine (T3) and thyroxine (T4) hormones are made. ... The follicle cells of the thyroid gland produce thyroid hormones while the parafollicular cells produce parathyroid hormone (PTH)