(Rochester, MN)  —  Many people with long haul COVID complain of fatigue, brain fog, heart palpitations and breathing problems months after testing negative.  Getting more rest often helps, but nutrition can play an important role as well.  COVID rehabilitation experts at the Mayo Clinic and Boston University both recommend a Mediterranean diet rich in fruits, vegetables, whole grains, nuts and olive oil, plus chicken and fish.  They also warn that red meat, sugar and processed foods can worsen inflammation.