week 12 Flashcards
(34 cards)
T2DM in First Nations peoples pathophysiology
strongly associated with chronic low-grade inflammation and early-life exposure to nutritional, metabolic, and psychosocial stressors
trigger epigenetic modifications that impair insulin signalling pathways and promote insulin resistance
why is T2DM poorly controlled in 1st nations communities
Systemic racism in healthcare and policy
Food insecurity due to high costs, lack of infrastructure
Housing instability and overcrowding- limited storage of food and medications
Reduced access to culturally safe, preventative care
Aboriginal and Torres Strait Islander peoples, CKD (kidney disease) higher bc
low Access to Kidney replacement therapy and transplant services as would have to relocate
Cultural incompatibility with urban-based dialysis as would have to relocate
Underrepresentation of First Nations peoples on transplant lists driven by systemic racism
Burden of comorbid infections and environmental exposures: CKD is exacerbated by repeated infections
acceleration of CKD in 1st nations people bc
Diabetic Kidney Disease
Hypertension
Glomerulonephritis
Infections and Autoimmune Conditions
Rheumatic Heart Disease (RHD) in First Nations Peoples pathophysiology
ong-term consequence of repeated episodes of acute rheumatic fever
Aetiology and Disproportionate Burden of RHD on 1st nations people
60x more liikely, with nearly 1/2 people diagnosed as severe cases and median age of death being 50 years/o
Community Strengths and the Endgame Strategy for RHD
Healthy environments: Investment in housing and hygiene
Early prevention: Community-led skin and throat programs
Care and support: Improved access to culturally safe care,
Social Determinants and Systemic Drivers of RHD on 1st nations people
Overcrowded housing increases transmission of Strepts A
Lack of functional health hardware eg hot water
Limited access to culturally safe primary and secondary care
Travel off-Country for specialist care and surgery is disruptive, emotionally distressing
Racism and systemic inequities create barriers to engagement with health services,
People living with severe mental illnesses (SMI) experience substantially higher rates of
Cardiovascular disease (CVD)
Type 2 diabetes mellitus (T2DM)
Chronic obstructive pulmonary disease (COPD)
Metabolic syndrome
Early mortality (14–23 years earlier than average)
Aetiology (CAUSES) of People with mental illness are at risk of developing higher rates of preventable physical illnesses
Early-Life Trauma and Adversity
Social Disadvantage and Discrimination
Health System Failures- lack of Dx
Biological pathways linking mental and physical illness:
(pathophysiology)
- HPA Axis Dysregulation and Chronic Stress
- Antipsychotic-induced metabolic dysfunction
- Tobacco smoking-related disease
- HPA Axis Dysregulation and Chronic Stress
dysregulate the hypothalamic–pituitary–adrenal (HPA) axis, leading to sustained cortisol elevation
promoting:
Insulin resistance and T2DM
Visceral adiposity
Hypertension
Endothelial dysfunction and atherosclerosis
- Antipsychotic-induced metabolic dysfunction
associated with significant metabolic side effects
Weight Gain
hyperglycaemia
dyslipidemia
QT Prolongation
Strengths-Based and Recovery-Oriented Approaches for People with mental illness developing higher rates of preventable physical illnesses
Integrated physical–mental health services
Peer-led programs using lived experience to support engagement
Culturally safe and trauma-informed models
why do LGBTQIA+ experience disproportionately poorer health outcomes
Discrimination and stigma in healthcare, education, and employment
Minority stress, including internalised stigma, concealment, and microaggressions
Violence and exclusion
Legal, financial, and housing instability
Lack of culturally competent care
LGBTQIA+ Individuals re mental illness
This includes emotional neglect, family rejection, bullying, and exposure to violence—each independently associated with later development of mood and anxiety disorders
Mistrust of the healthcare system due to previous discrimination, misgendering or lack of provider knowledge
this is minority stress
Pathophysiology of LGBTQIA+ Individuals re mental illness
HPA axis dysregulation → cortisol elevation
Altered serotonergic and dopaminergic signalling
Neuroinflammation and reduced neuroplasticity
Immune system activation and allostatic overload
LGBTQIA+ Individuals re Cardiovascular Disease (CVD) Aetiology
Chronic psychological stress
Elevated smoking, vaping and substance use
Physical inactivity due to unsafe or exclusionary environments
inadequate preventive and primary care
LGBTQIA+ Individuals re Cardiovascular Disease (CVD) pathophysiology
- Endothelial dysfunction via cortisol and cytokines
- Chronic stress and inflammation impair vascular endothelial function, reducing nitric oxide availability and increasing vasoconstriction.
- Atherosclerosis progression
- Persistent low-grade inflammation, oxidative stress and dyslipidaemia contribute to plaque formation and coronary artery disease
- Heightened cardiovascular reactivity and autonomic dysregulation
LGBTQIA+ Individuals re Type 2 Diabetes Mellitus & Metabolic Syndrome Aetiology
Cortisol-induced insulin resistance
Limited access to exercise spaces and affirming care
Elevated smoking/alcohol use
Hormonal effects from gender-affirming therapy
LGBTQIA+ Individuals re Type 2 Diabetes Mellitus & Metabolic Syndrome pathophysiology
Impaired insulin sensitivity (muscle, hepatic)
Visceral fat accumulation
Dysregulated glucose metabolism, chronic inflammation
LGBTQIA+ Individuals re Tobacco and vaping related diseases Aetiology
as coping mechanisms. Plus there is historic and ongoing targeting by tobacco and vaping industry
LGBTQIA+ Individuals re Tobacco and vaping related diseases pathophysiology
Oxidative stress damaging lung and vascular tissue
Carcinogen exposure → cancers (e.g., lung, oropharyngeal)
Acute lung injury (vaping) and chronic bronchial inflammation (smoking) → COPD
LGBTQIA+ Individuals re HIV and Other STIs Aetiology
Barriers to PrEP and STI screening
Syndemic factors: homelessness, substance use, trauma
Lack of inclusive sexual health education