In many cases, yes. The majority of erectile dysfunction has a physical basis — most commonly impaired circulation and vascular health, which are directly influenced by diet. Blood sugar problems, low testosterone, obesity, and specific nutritional deficiencies also contribute. A functional nutrition approach addresses the underlying cardiovascular and hormonal factors, and improvements in these areas often lead to improvements in sexual function. ED can also be an early warning sign of cardiovascular disease, so it’s well worth addressing proactively.