Sexual arousal
Sexual arousal triggers the release of chemicals in the body, causing the muscles in the penis to relax, allowing blood to flow into the penis.
Blood flow to the penis
Adequate blood flow to the penis is necessary for an erection. In ED, there may be insufficient blood flow to the penis, making it difficult to achieve or maintain an erection.
Nerve impulses
Nerve impulses in the penis play a role in triggering the release of chemicals that cause an erection. In some cases of ED, nerve damage can interfere with this process.
Hormones
Hormones like testosterone play a role in sexual function and can affect the ability to achieve or maintain an erection.
Psychological factors
Psychological factors such as stress, anxiety, depression, and relationship problems can contribute to ED.
Overall health
Medical conditions like diabetes, high blood pressure, heart disease, and obesity can increase the risk of ED.
