Given the current coverage of the anniversary of the death of President Kennedy, it seems not unreasonable to post about his health issues - specifically the possibility of Pernicious Anaemia. This is a paragraph from near the end of the article.
Not intended as anything other than an interesting footnote to history.
Although the White House medical records contain no mention of peripheral neuropathy, they indicate that Kennedy had received regular vitamin injections, including vitamin B12, throughout his presidency (24). It is unlikely that Kennedy was thiamine deficient, and anemia is not associated with thiamine deficiency. Travell's description is more consistent with vitamin B12 deficiency. The coexistence of pernicious anemia is consistent with a diagnosis of APS 2: Pernicious anemia is found in 2% to 25% of patients with APS 2 (27).