From TheHeart.org, an article by Lisa Nainggolan:
Gothenburg, Sweden – Further support for the concept of the obesity paradox has come from a large study of patients with acute coronary syndrome (ACS) in the Swedish Coronary Angiography and Angioplasty Registry (SCAAR) . Those who were deemed overweight or obese by body-mass index (BMI) had a lower risk of death after PCI [percutaneous coronary intervention, aka angioplasty] than normal-weight or underweight participants up to three years after hospitalization, report Dr Oskar Angerås (University of Gothenburg, Sweden) and colleagues in their paper, published online September 5, 2012 in the European Heart Journal.
Can confirm. My grandmother in the 1930s was instructed to make sure she fed her husband lots and lots of butter to lubricate his heart after a heart attack. This proved to work extraordinarily well, at least until his next heart attack.
I refer once again to the classic 1999 The Onion headline: Eggs Good for You This Week.