The Pathological Truth Behind Diarrhea-Induced Weight Loss: Uncontrolled Water and Electrolyte Metabolism, Impaired Vitamin Absorption, and Threats to Cardiac Function

Diarrhea, a common digestive symptom, is often referred to as "loose stools" in daily life. It is characterized by an abnormally increased frequency of bowel movements, loose stools, and increased water content. Although diarrhea can cause a rapid drop in the number on the scale, the side effects of this "diarrhea-induced weight loss" are often greater than the harm caused by obesity itself.

The essence of diarrhea-based weight loss is to expel a large amount of water from the body in a short period of time. When the body is severely dehydrated, the skin becomes dull and lifeless, various cells in the body shrink, and the body's activity level drops significantly, seriously affecting health. This kind of "weight loss" achieved by losing water is false; once water is replenished, the weight will quickly return.

Many popular weight-loss teas and pills on the market contain phenbutylamine and fluphenazine as their active ingredients. These ingredients suppress appetite by interfering with serotonin and the central nervous system, but they also significantly increase the burden on the heart. Long-term use of these ingredients can significantly affect heart function and may even induce serious heart disease.

In terms of drug mechanism of action, a drug called Xenical (Orlistat capsules) stands out in the domestic weight-loss drug market. It is a drug with a non-systemic mode of action, mainly achieving weight loss by inhibiting esterases in the gastrointestinal tract. Almost all dietary fats exist in the form of triglycerides. The epithelial cells of the human digestive tract cannot directly absorb triglycerides; they must be broken down into glycerol and fatty acids by pancreatic lipase before they can enter the bloodstream.

Xenical works on this principle, using its unique molecular structure to bind to the active sites of gastrointestinal esterases, blocking enzyme activity and preventing the complete breakdown of triglycerides. As a result, approximately 30% of dietary fat is not absorbed and is excreted unchanged through the digestive tract. However, this mechanism is accompanied by severe adverse reactions, including oily spots, fatty (oily) stools, diarrhea, and fecal incontinence. These thin, fatty stools can severely irritate the rectum, often causing unbearable steatorrhea in adolescents.

Using diarrhea as a means of weight loss in the long term can directly lead to severe malabsorption. The most significant impact is a marked reduction in the absorption of fat-soluble vitamins (vitamin A, vitamin D, vitamin E, and vitamin K). Since these vitamins must be dissolved in fat to be transported and absorbed, long-term deficiency can lead to vitamin deficiency diseases, seriously affecting the growth and development of children and adolescents and the health of adults.

In addition, adverse reactions to these drugs can involve the respiratory, nervous, and mental systems. Observed symptoms include upper respiratory tract infections, severe headaches, menstrual disorders, anxiety, and chronic fatigue. These drugs are absolutely contraindicated in patients with chronic respiratory distress syndrome or cholestasis.

Therefore, any form of "diarrhea-induced weight loss" violates the World Health Organization's (WHO) scientific weight loss principles of "no anorexia, no fatigue, no diarrhea, and no rebound." In professional sports management and exercise-based weight loss systems, the use of any drugs or methods involving diarrhea for weight loss is strictly prohibited.