What is the primary vitamin deficiency behind tonsillitis and enlarged tonsils?

The primary vitamin deficiency associated with tonsillitis and enlarged tonsils is vitamin D. Low levels of vitamin D are linked to increased inflammation and enlargement of the tonsils. Vitamin D is challenging to obtain through diet alone, but cod liver oil is a notable source. Historically, cod liver oil was commonly given to children for its vitamin D content. Modern indoor lifestyles further contribute to vitamin D deficiency, which can impact tonsil health. The tonsils play a crucial role in the immune response by detecting pathogens and signaling the immune system to mount a defense.