Everything that exists in the universe is a part of nature, and therefore can be explained by material causes. Consequently, it would be misinformation to resort to supernatural, spiritual or paranormal cause to explain natural phenomena.
According to Wikipedia, euphoria is a 'medically recognized mental and emotional condition in which a person experiences intense feelings of well-being, elation, happiness, excitement and joy'. Another point that man has discovered is Dopamine which is a hormone manufactured in the nerve cell bodies located within the ventral tegmental area (VTA) and is released in the brain, playing important roles in reward, motivation, the experience of pleasure, and motor function. In other words, it is not a miracle or divine instance. If presently we do not sufficiently understand certain strange things, say, health healing, it is because of our lack of immediate knowledge, not approval of supernatural powers.
For instance, a relatively inexpensive over-the-counter cough syrup may contain amphetamine, a central nervous system stimulant, used in the treatment of attention deficit hyperactivity disorder. The same substance is a parent compound in manufacturing methamphetamine, a neurotoxin and potent psycho-stimulant, soluble in water; therefore, making it injectable.
Amphetamine was first made in 1887 in Germany, but methamphetamine was developed in Japan in 1919. During World War II, methamphetamine found more applications such as keeping troops awake. High doses were given to Japanese Kamikaze pilots before their suicide missions! According to Pakistan Express Tribune, July 20th, 2010, Islamists who train suicide bombers in Pakistan use methamphetamine to create the right psychological state of mind needed by the bombers to kill themselves as well as other people. Of course, we need to know that a Taliban mullah knows nothing about human brain structure. It is obvious that certain agencies are involved herein to assist their stooges to send suicide bomber on certain missions. The key factor here is the total ignorance and the involvement of certain entrepreneurs who are pursuing their business interests in the regions.
Since many scientists have been murdered by the mobs and mob leaders, it is a hard decision to take sides. The fact is that the mob is manipulated by their criminal leaders who have no respect for true knowledge. Have you ever heard a learned man turn an executioner to behead someone, a prince or an apostate in the main square of an Islamist country? The mob is an available natural force like wind or river to be harnessed by men for certain purposes such as making a windmill. At the same time, many moderately learned men get cut in between and lose their life.
Anyway, after the war, methamphetamine abuse by injection reached epidemic proportions. In the 1950s, methamphetamine was prescribed as a diet aid and to fight depression. USA and Mexico manufacture most of the methamphetamine abused in the United States. But the drug is also easily made in small clandestine laboratories, with relatively inexpensive over-the-counter ingredients such as pseudoephedrine, a common ingredient in cold medicines.