Social and Cultural Factors Affecting Health and Disease

1. Social Context of Medicine

• Poverty and malnutrition
• Poor sanitation and inadequate housing
• Lack of education
• Unemployment and poor working conditions
• Behavioural and cultural factors

"Even a person with a broken leg may present complex social and personal factors which may influence his recovery." - Park

2. Social Factors

(a) Socioeconomic Status (Social Class)

• One of the most important determinants of health
• Infant mortality rates are highest in slums and lowest in affluent areas
• Lower socioeconomic groups have higher prevalence of TB, malnutrition, communicable diseases
• Access to health care and quality of environment are closely tied to income

(b) Poverty

• Root cause of malnutrition, poor sanitation, overcrowding
• Creates a "vicious cycle": poverty -> disease -> poverty
• Poverty leads to inability to afford health care, nutritious food, and safe housing

(c) Education

• Illiteracy is the greatest barrier to health improvement
• Maternal education is a key determinant of child health (Kerala model):
  • Educated mothers marry later, practice family planning, seek healthcare
  • Leads to decline in infant and child mortality
  • Improves personal health behaviours and access to services

(d) Occupation and Working Conditions

• Occupational hazards cause specific diseases (silicosis in miners, byssinosis in cotton workers)
• Poor working conditions predispose to ill health
• Industrial development without safeguards increases disease burden

(e) Urbanization and Overcrowding

• Overcrowding facilitates spread of communicable diseases (TB, measles, meningitis)
• Urban slums combine poverty, poor sanitation, and overcrowding
• Migration creates stress and social disruption

(f) Housing

• Overcrowded and poorly ventilated housing is linked to TB, respiratory infections
• Lack of safe water supply and sanitary facilities promotes diarrhoeal diseases

(g) Social Problems

• Alcoholism, drug addiction, sexually transmitted diseases, mental illness are both public health AND social problems
• Other social issues with health implications: housing shortage, divorce, population growth, ageing population

3. Cultural Factors

Definition of Culture

(a) Customs and Traditions

• Age-old habits involving cleanliness, eating, clothing, and child care affect health
• Religion and caste influence socio-cultural patterns of living
• Example: Chewing pan (betel nut) in India is associated with oral cancer

(b) Dietary Habits

• Cultural food practices determine nutritional status
• Taboos on nutritious foods (e.g., prohibiting certain proteins for women or children) cause deficiency diseases
• In developed countries, high fat diets linked to cancer of the colon and cardiovascular disease

(c) Alcohol Use

• In many cultures, drinking is a social habit and a prestige symbol
• Rapid socioeconomic and cultural changes lead youth to view alcohol as a status symbol
• Consequences: cirrhosis, crime, malnutrition, neglect of family, STDs

(d) Religion

• Religious practices can both protect and harm health
• Circumcision (Muslim/Jewish communities) - lower rates of penile and cervical cancer
• Dietary restrictions may lead to nutritional deficiencies or, conversely, protect against certain diseases
• Religious opposition can impede immunization, family planning

(e) Breast-feeding Practices

• A cultural determinant of infant health
• Early weaning and bottle-feeding under poor hygiene conditions increases infant mortality
• Cultural shifts away from breast-feeding have adverse health consequences

(f) Early/Child Marriage

• Babies of teenage mothers have the highest risk of neonatal and post-neonatal mortality
• Cultural acceptance of early marriage is a major determinant of maternal and child health

(g) Sex Discrimination (Gender)

• In India, female infants receive less care than males; female post-neonatal mortality is higher
• Son preference leads to differential feeding, healthcare seeking, and neglect of girls
• Affects women's health throughout life - restricted access to care and nutrition

(h) Social Norms on Illness Behaviour

• Culture determines when a person considers themselves "sick" and seeks care
• Stigma around diseases like TB, leprosy, STDs, mental illness delays care-seeking
• Affects compliance with treatment and follow-up

4. Medical Sociology

"professional endeavour devoted to social epidemiology, the study of cultural factors and social relations in connection with illness, and the social principles in medical organization and treatment."

• The medical profession
• Relationship of medicine to the public
• Social factors in aetiology, prevalence, incidence, and interpretation of disease

5. Social Pathology and Social Epidemiology

• Social pathology describes the relationship between disease and social conditions
• Conditions such as diabetes, cardiovascular disease, cancer, chronic bronchitis, accidents all have social dimensions
• Social epidemiology merges the epidemiological and social survey approach to study the role of social factors in disease causation
• Social surveys (e.g., Chadwick's survey -> General Board of Health, 1848) drive public health reforms

6. Multifactorial Causation

Key Takeaway (Park's Summary)

1. Individual predispositions
2. Ecological predispositions
3. Current social circumstances
4. Available opportunities

"The secret of national health lies in the homes of the people." - Park's Textbook of Preventive and Social Medicine

Social and Cultural Factors Affecting Health and Disease

SOCIAL FACTORS

1. Socioeconomic Status

• Infant mortality is highest in slums and lowest in affluent areas
• Lower social class = higher rates of TB, malnutrition, and communicable diseases

2. Poverty

• Root cause of malnutrition, overcrowding, and poor sanitation
• Creates a vicious cycle: poverty → disease → more poverty

3. Education

• Illiteracy is the greatest barrier to health improvement
• Educated mothers marry later, practice family planning, and reduce infant mortality (Kerala model)

4. Occupation & Working Conditions

• Occupational hazards cause specific diseases (e.g., silicosis in miners)
• Poor working conditions predispose to ill health and accidents

5. Urbanization & Overcrowding

• Overcrowding facilitates spread of TB, measles, and respiratory infections
• Urban slum conditions combine poverty, poor sanitation, and disease

6. Housing

• Poor ventilation and overcrowded housing strongly linked to TB
• Lack of safe water and sanitation promotes diarrhoeal diseases

7. Social Problems

• Alcoholism, STDs, and mental illness are both social and public health problems
• Housing shortage, divorce, and population growth all carry direct health implications

CULTURAL FACTORS

1. Customs & Traditions

• Age-old habits of eating, cleanliness, and child care profoundly affect disease incidence
• Chewing pan (betel nut) in India is culturally accepted and linked to oral cancer

2. Dietary Habits

• Food taboos on nutritious items (protein restrictions for women/children) cause deficiency diseases
• High-fat cultural diets in developed countries linked to colorectal cancer and cardiovascular disease

3. Alcohol Use

• Alcohol is culturally viewed as a prestige symbol, especially after rapid socioeconomic change
• Leads to cirrhosis, malnutrition, crime, and neglect of families

4. Religion

• Circumcision in Muslim/Jewish communities is associated with lower rates of penile and cervical cancer
• Religious opposition can impede immunization and family planning programs

5. Breast-feeding Practices

• Cultural shift away from breast-feeding leads to higher infant mortality under poor hygiene
• Early weaning and bottle-feeding increases susceptibility to gastrointestinal infections

6. Early Marriage

• Babies of teenage mothers have the highest risk of neonatal and post-neonatal mortality
• Cultural acceptance of child marriage is a major driver of maternal and child morbidity

7. Sex Discrimination

• Female infants in India receive less care; female post-neonatal mortality exceeds male
• Son preference leads to differential feeding and restricted healthcare access for girls

8. Stigma & Illness Behaviour

• Stigma around TB, leprosy, STDs, and mental illness delays care-seeking
• Culture determines when a person considers themselves "sick" - affecting treatment compliance

Core Concept (Park)

Health is influenced by individual, ecological, social circumstances, and opportunities - all shaped by economic, political, and cultural systems. Social and cultural factors are equally important as biological factors in disease causation (multifactorial causation).

Biomedical Waste Management

1. Definition & Legal Framework

• Bio-Medical Waste (BMW) = any waste generated during diagnosis, treatment, or immunization of humans/animals, or in research/biological production activities
• Governed by the Bio-Medical Waste (Management & Handling) Rules, 1998 under the Environment (Protection) Act, 1986

2. Sources (Establishments Covered Under BMW Rules)

• Hospitals, nursing homes, clinics, dispensaries, PHCs, blood banks, laboratories
• Medical research institutions, animal houses, slaughter houses, vaccinating centres, biotechnology units

3. Categories of Health-Care Waste

• 80% = general waste (handled by normal domestic/urban waste system)
• 15% = pathological and infectious waste; 1% = sharps; 3% = chemical/pharmacological; <1% = special (radioactive, cytotoxic)

4. Categories of Bio-Medical Waste (BMW Rules Schedule)

5. Health Hazards of BMW

• Primary hazards: Risk to doctors, nurses, healthcare workers, and hospital maintenance staff who handle the waste
• Secondary hazards: Patients in healthcare facilities and waste-workers/scavengers outside hospitals; community exposed through improper disposal

6. Colour-Coded Segregation at Source

• Yellow bag - Human/animal anatomical waste, soiled waste (incineration/deep burial)
• Red bag/container - Recyclable contaminated waste, sharps (autoclaving/shredding)
• Blue/white translucent bag - Glassware, sharps (autoclaving/microwave)
• Black bag - Incineration ash, chemical/pharmaceutical waste (secure landfill)

7. Treatment Methods

I. Incineration

• Most common method; reduces waste volume by ~90%
• Three types: Double-chamber pyrolytic (best for infectious waste), Single-chamber furnace, Rotary kilns (for genotoxic/chemical waste)

II. Chemical Disinfection

• Chemicals (chlorine, formaldehyde) added to kill pathogens
• Best for liquid waste - blood, urine, stools, hospital sewage

III. Wet Thermal Treatment (Autoclaving)

• Infectious waste exposed to high-temperature, high-pressure steam
• Not suitable for anatomical waste or chemical/pharmaceutical waste

IV. Dry Thermal Treatment (Screw-feed)

• Waste shredded and heated in rotating auger; reduces volume by 80%
• Suitable for infectious waste and sharps only

V. Microwave Irradiation

• Frequency ~2450 MHz destroys most microorganisms via heat conduction
• Efficiency must be checked routinely by bacteriological/virological tests

VI. Land Disposal (Deep Burial)

• Used in remote areas where incineration is unavailable
• Pit must be 2 metres deep, lined, away from habitation and water table

8. Responsibilities Under BMW Rules

• Every occupier/healthcare establishment must segregate, store, transport, treat, and dispose of BMW as per rules
• Must not mix BMW with other wastes
• Must apply for authorization from prescribed authority
• Must maintain records of waste generation and disposal

9. Waste Generation in India

• Hospital waste generated: ½ to 4 kg per bed per day (Govt. hospitals) and ½ to 2 kg per bed per day (private hospitals)
• Nearly 45-50% of hospital waste in cities like Bangalore is infectious
• Proper segregation at source is the key first step in safe management

Core Principle (Park)

The objective of BMW management is to protect human health and the environment from the hazards of health-care waste. The most critical step is segregation at source using colour-coded bags, as mixing of waste increases the volume requiring special treatment and raises cost and risk.