== causes ==
* Drugs (anti-depressants (SSRIs) and nicotine are most common)
*Neurogenic disorders (spinal cord and brain injuries, nerve disorders such as Parkinson's disease, *Alzheimer's disease, multiple sclerosis, and stroke)
*Cavernosal disorders (Peyronie's disease)
*Psychological causes: performance anxiety, stress, mental disorders (clinical depression, schizophrenia, substance abuse, panic disorder, generalized anxiety disorder, personality disorders or traits), psychological problems, negative feelings.
*Diseases such as diabetes and multiple sclerosis (MS). While these two causes have not been proven they’re likely suspects as they cause issues with both the blood flow and nervous systems.
*Lifestyle: smoking is a key cause of erectile dysfunction.Smoking causes impotence because it promotes arterial narrowing. See also Tobacco and health.
== Home remedies ==
* Raw pine pollen is the richest seedbed of testosterone derived from plants; since it is the male sperm of pine trees.