Erectile Dysfunction Causes and Symptoms. There are many causes of erectile dysfunction (impotence) and some include: 1  blood vessel diseases (such as peripheral vascular disease and others), 2  systemic disease, 3  hormonal imbalance, and. 4  medications (such as blood pressure and heart medications).
For the martial arts rank of Nidan, see Dan (rank). Nidan (sometimes known as Midan or Idan) was a Welsh priest and, according to some sources, a bishop, in the 6th and 7th centuries. He is now commemorated as a saint.
What is Naikan? Naikan is a method of self-reflection to explore one's inner self. NAIKAN is a Japanese word and means inside looking or introspection. Naikan combines three elements: The power of silence A quiet place enables you to concentrate and to feel pure consciousness.