It was a running joke that that all the wine the French drank helped them live longer. It was always used to demonstrate the irony of good health until it turned out to be true.
Wine, and grapes by extension, have remarkable effects on the health of your heart, blood, cell walls, and DNA. It might seem magical, but with a closer look the workings of red wine are pretty simple. And concentrated. Most of the good stuff from red wine comes from the seed of the grapes, and from there it executes a very simple reaction in your body over, and over, over.
Simply put, grape seeds exert their force by acting as the Robin Hood of electrons inside your body.