President William Howard Taft held many titles - President of the United States, Chief Justice of the United States, Secretary of War, Solicitor General, Governor of Cuba, and Governor of the Philippines, among others. Yet there is only one title which he still holds some 80 years after his death - fattest President.
Many anecdotes have been passed down regarding Taft's tremendous weight. One of the most famous concerns him getting stuck in the Presidential bathtub and thus ordering a replacement - large enough to fit four average-sized men! Taft even had a new bed constructed at his friend Todd Lincoln's (son of Abraham) house because the springs in the original mattress broke under his weight.
Yet, Taft was not always obese. He was a collegiate wrestler at 225 lbs. and by all accounts quite athletic. He steadily gained weight after graduating college, eventually ballooning to 320 lbs. in 1905, at which point he began his first diet. Before the era of diet books (let alone DVDs) and personal trainers, physicians often constructed and oversaw their patients' weight loss regimens.