Medical aspects
Physiological responses
Masters and Johnson were some of the first researchers to study the sexual response cycle in the early 1960s, based on the observation of 382 women and 312 men. They described a cycle that begins with excitement as blood rushes into the genitals, then reaches a plateau during which they are fully aroused, which leads to orgasm, and finally resolution, in which the blood leaves the genitals.In the 1970s, Helen Singer Kaplan added the category of desire to the cycle, which she argued precedes sexual excitation. She stated that emotions of anxiety, defensiveness and the failure of communication can interfere with desire and orgasm. In the late 1980s and after, Rosemary Basson proposed a more cyclical alternative to what had largely been viewed as linear progression. In her model, desire feeds arousal and orgasm, and is in turn fueled by the rest of the orgasmic cycle. Rather than orgasm being the peak of the sexual experience, she suggested that it is just one point in the circle and that people could feel sexually satisfied at any stage, reducing the focus on climax as an end-goal of all sexual activity. Males
As a man nears orgasm during stimulation of the penis, he feels an intense and highly pleasurable pulsating sensation of neuromuscular euphoria. These pulsating sensations originates from the contractions of pelvic floor muscles that begin in the anal sphincter and travels to the tip of the penis, commonly described as a "throbbing" or "tingling" sensation.
Other causes: Drugs that can produce steatorrhea include orlistat, a slimming pill, or as adverse effect of octreotide or lanreotide, used to treat acromegaly or other neuroendocrine tumors. It can be found in Graves disease / hyperthyroidism. Medications
Orlistat (also known by trade names Xenical and Alli) is a diet pill that works by blocking the enzymes that digest fat. As a result, some fat cannot be absorbed from the gut and is excreted in the feces instead of being metabolically digested and absorbed, sometimes causing oily anal leakage. Vytorin (ezetimibe/simvastatin) tablets can cause steatorrhea in some people. Excess whole nuts in diet
Some studies have shown that stool lipids are increased when whole nuts are eaten, compared to nut butters, oils or flour and that lipids from whole nuts are significantly less well absorbed. Natural fats
Consuming jojoba oil has been documented to cause steatorrhea and anal leakage because it is indigestible.Consuming escolar and oilfish (sometimes mislabelled as butterfish) will often cause steatorrhea, also referred to as Gempylotoxism or Gempylid Fish Poisoning or keriorrhea. Artificial fats
The fat substitute Olestra, used to reduce digestible fat in some foods, was reported to cause leakage in some consumers during the test-marketing phase. As a result, the product was reformulated before general release to a hydrogenated form that is not liquid at physiologic temperature. The U.S. Food and Drug Administration warning indicated excessive consumption of Olestra could result in "loose stools"; however, this warning has not been required since 2003. Diagnosis
Steatorrhea should be suspected when the stools are bulky, floating and foul-smelling.