Described herein are inventions directed to methods of treating a diastolic cardiac dysfunction and the symptoms thereof in a subject that includes administering an amount of a TRPV2 receptor agonist effective to treat the diastolic cardiac dysfunction. The TRPV2 receptor agonist may be administered in at least one of an injection, orally, or transdermally. The amount of TRPV2 receptor agonist is sufficient to result in an improved performance on quantitative diagnostic criteria. In an embodiment, the TRPV2 receptor agonist is administered over a period of about 8 hours to about 24 hours. The TRPV2 receptor agonist may be used for short term treatments, i.e., less than a week, or it may be administered in a long term manner, i.e., over a period of weeks, months, or even years. Exemplary TRPV2 receptor agonists include probenecid, 2-aminoethoxydiphenyl borate, cannabinol, cannabidiol, and combinations thereof.
