Sub-health self-assessment and multidimensional cause analysis: a comprehensive review from 30 typical items to environmental and lifestyle factors.

3. Symptoms of Sub-health: Some scholars believe that if a person exhibits 6 or more of the following 30 symptoms, they can be preliminarily identified as being in a sub-healthy state: Mental tension, anxiety; loneliness, low self-esteem, depression; inattention, superficial thinking; easily agitated, prone to irritability; memory loss, forgetting familiar faces; diminished interest, decreased desire; reluctance to socialize, low mood; easy fatigue, easily tired eyes; decreased energy, slow movements; dizziness and difficulty recovering; dizziness and blurred vision after prolonged standing; weak limbs, lack of strength; weight loss, physical weakness; difficulty falling asleep, frequent dreams and easy awakening; reluctance to get up in the morning, frequent daytime naps. Symptoms of sub-health include: localized numbness, cold hands and feet; excessive sweating in the palms and armpits, dry tongue and mouth; low-grade fever, night sweats; intermittent lower back pain; white coating on the tongue, bad breath; recurring mouth ulcers; impaired taste, poor appetite; acid reflux, belching, indigestion; loose stools, constipation, abdominal distension; susceptibility to colds, cold sores; nasal congestion and runny nose, sore throat; shortness of breath, difficulty breathing; chest pain and tightness, pressure in the heart area; palpitations, irregular heartbeat; tinnitus, hearing loss, motion sickness. 4. Causes of Sub-health: Experts point out that sub-health is caused by congenital deficiencies, unhealthy lifestyle habits (such as excessive drinking, smoking, unbalanced diet, irregular lifestyle, lack of exercise), extreme personality traits, stressful work and life, environmental pollution, and harsh climate. Physical examinations often reveal high blood pressure, high blood sugar, high weight, and low immune function. Just like the many types and symptoms of diseases, sub-health also presents in various forms. (1) Excessive tension and stress. Studies have shown that prolonged tension and stress have four harmful effects on health: First, it can cause acute and chronic stress, directly damaging the cardiovascular and gastrointestinal systems, leading to stress ulcers, increased blood pressure, increased heart rate, accelerated arteriosclerosis, and cardiovascular events; second, it can cause brain stress fatigue and cognitive decline; third, it can disrupt the biological clock and affect sleep quality; and fourth, it can lead to decreased immune function, increasing the chance of malignant tumors and infections. (2) Unhealthy lifestyles and habits. High-salt, high-fat, and high-calorie diets, heavy smoking and drinking, and sedentary lifestyles are the most common causes of sub-health. (3) Adverse effects of environmental pollution. Pollution such as water and air pollution, noise, microwaves, electromagnetic waves, and other chemical and physical factors are invisible killers of health that are difficult to prevent. (4) Stimulation from adverse mental and psychological factors. This is one of the important factors in both psychological and physical sub-health.