Health Inequalities & Social Determinants of Health

Comprehensive MPH Answers | Marmot's Avoidable Inequalities, Tribal Child Mortality, Jangalkhas Incident, Ayushman Bharat, Menstrual Cycle, Rh Incompatibility, Nervous System

Q1. "Inequalities in health between and within countries are avoidable" — Michael Marmot

Causes of Health Inequalities

  • Poverty and low income – lack of nutritious food, safe housing, sanitation, healthcare
  • Lack of education – low awareness, poor hygiene, reduced healthcare utilization
  • Unemployment and poor working conditions – occupational diseases, stress, injuries
  • Poor housing and environment – overcrowding, pollution, unsafe water
  • Social exclusion and discrimination – SC/ST, minorities, migrants, women face reduced access
  • Unequal healthcare access – infrastructure gaps, affordability, insurance coverage

How Health Inequalities Can Be Avoided

  • Improve social determinants – education, housing, nutrition, employment, sanitation
  • Universal healthcare access – strengthen primary healthcare, free essential medicines, rural expansion
  • Poverty reduction – employment generation, social security, food security, minimum wages
  • Improve education – especially female education, health literacy
  • Gender equality – equal education, reproductive rights, nutrition, healthcare access
  • Better nutrition and food security – ICDS, Mid-Day Meal, POSHAN Abhiyaan
  • Safe environment and sanitation – Swachh Bharat, safe drinking water
  • Community participation – planning, implementation, awareness programs
  • Equity-oriented public policies – prioritize vulnerable groups (tribals, rural poor, children, elderly)
Marmot’s Key Principles: Give every child the best start, enable education and lifelong learning, ensure fair employment, provide healthy living conditions, create healthy communities, reduce income inequality. Health inequalities are socially created and preventable.

Q2. Child Mortality among Scheduled Tribes vs All Groups (NFHS-4)

IndicatorST (West Bengal)All (West Bengal)ST (India)All (India)
Neonatal Mortality Rate (NMR)44.122.0
Infant Mortality Rate (IMR)46.127.5
Under-Five Mortality Rate (U5MR)51.931.8Higher among STLower

Possible Causes

  • Poverty – low income, food insecurity, poor housing
  • Malnutrition – undernutrition, anemia, low birth weight
  • Poor maternal healthcare – lack of ANC, institutional delivery, skilled birth attendants
  • Geographic isolation – forests, hilly areas, remote villages
  • Low literacy – poor awareness of nutrition, immunization, hygiene
  • Poor sanitation and unsafe water – diarrhea, infections, parasitic diseases
  • Inadequate healthcare infrastructure – shortage of doctors, health workers, medicines, transport
  • Social exclusion – discrimination, policy neglect, poor representation
The table demonstrates deep social inequality and failure of equitable healthcare delivery. Reducing tribal child mortality requires inclusive and equity-based public health policies.

Q3. Jangalkhas Incident and Social Determinants of Health

Social Determinants at Play

  • Poverty – no cultivable land, unstable income → food insecurity, poor nutrition
  • Low literacy – especially among women → poor health awareness, delayed treatment
  • Unemployment – only 8% main workers → economic insecurity, stress
  • Malnutrition – weakens immunity, increases TB susceptibility
  • Alcoholism – poor nutrition, weakened immunity, neglect of healthcare
  • Lack of healthcare access – no medical verification, weak surveillance, neglect of tribal populations
  • Social exclusion – Lodha-Savar community historically marginalized → poor development, limited state support
  • Poor living conditions – overcrowding, poor sanitation → increased TB transmission
The deaths cannot be explained only by disease. They reflect structural inequality, social deprivation, and neglect of tribal health. Disease occurs within social and economic contexts. Measures needed: improve nutrition, strengthen tribal healthcare, improve education, livelihood support, address alcohol abuse.

Q4. Government Health Insurance Scheme (2018) – Ayushman Bharat PM-JAY

Positive Impacts

  • Financial protection – reduces catastrophic health expenditure, borrowing, medical impoverishment
  • Increased healthcare access – timely treatment, hospitalization, service utilization
  • Reduction in health inequalities – marginalized populations gain better access
  • Early diagnosis and treatment – screening, diagnosis, management of chronic diseases
  • Improved maternal and child health – institutional delivery, neonatal care

Limitations & Challenges

  • Focus on hospitalization – curative care over prevention, primary healthcare, health promotion
  • Rural infrastructure gaps – lack of hospitals, specialists, diagnostic facilities
  • Awareness issues – poor populations lack information, face administrative barriers
  • Risk of private sector exploitation – unnecessary procedures, overbilling
  • Out-of-pocket expenses may continue – medicines, travel, diagnostics
Ayushman Bharat is an important step toward Universal Health Coverage and health equity. Long-term success depends on strengthening public health infrastructure, awareness, and preventive healthcare systems.

Q5. Menstrual Cycle, Rh Incompatibility, and Nervous System

(A) Physiological Basis of Menstrual Cycle

Phases

  • Menstrual Phase (Day 1–5): Shedding of endometrium due to decline in estrogen & progesterone
  • Follicular/Proliferative Phase (Day 6–14): FSH stimulates follicle growth, estrogen thickens endometrium
  • Ovulation (Around Day 14): LH surge releases mature ovum
  • Luteal/Secretory Phase (Day 15–28): Corpus luteum secretes progesterone to maintain endometrium

Hormonal Regulation

Hypothalamus → GnRH → Pituitary → FSH & LH → Ovary → Estrogen & Progesterone (feedback mechanisms)

(B) Rh Incompatibility in Pregnancy

Definition & Mechanism

  • Occurs when mother is Rh negative and fetus is Rh positive
  • Fetal RBCs enter maternal circulation → mother develops anti-Rh antibodies
  • In subsequent Rh-positive pregnancies, maternal antibodies destroy fetal RBCs

Consequences & Prevention

  • Hemolytic disease of newborn, jaundice, anemia, hydrops fetalis, fetal death
  • Prevention: Anti-D immunoglobulin to Rh-negative mothers

(C) Difference between Autonomic and Somatic Motor System

FeatureAutonomic Nervous SystemSomatic Motor System
ControlInvoluntaryVoluntary
Effector organsSmooth muscle, glands, cardiac muscleSkeletal muscle
Number of neuronsTwo-neuron pathwaySingle neuron
NeurotransmitterAcetylcholine/NoradrenalineAcetylcholine
DivisionsSympathetic & ParasympatheticNo divisions
FunctionMaintains internal environmentControls body movement