Public Health, Life Expectancy, Behavior Change, and Health Promotion Notes

Health history, life expectancy, and the shift to chronic disease

• Overview of mortality shift: infectious diseases were historically the leading killers, but now chronic diseases (long-lasting, slowly developing) are the primary cause of death. Chronic diseases do not typically cause sudden, day-to-day onset like some infections (e.g., measles can appear abruptly after exposure).
• Visual/history idea: life expectancy has risen dramatically from 1900 to 2014 due to health and wellness advances.
• Key public health improvements that boosted life expectancy:
  • Safer and healthier foods in the 1930s.
  • Hygiene practices: handwashing and general sanitation became common.
  • Motor vehicle safety: adoption of airbags, seat belts, and related regulations in the 1950s–1980s.
  • Family planning and healthier mothers/babies, improving infant and child outcomes.
• Consequences for quality of life: longer lives don’t always mean perfect health; some individuals live with disabilities (e.g., loss of a limb, stroke effects) affecting daily activities and quality of life.
• General takeaway about life expectancy and healthy years:
  • For the typical American, around the majority of life expectancy is expected to be healthy, with a portion of life (on average) potentially affected by impairments or disability.
  • The speaker expects these trends to continue improving overall health and quality of life as a function of public health advances.

Defining healthy life expectancy and prevalent health patterns

• Averages and impairment: the discussion uses broad averages; individual experiences vary.
• Example numbers mentioned (approximate and to illustrate trends):
  • Life expectancy is around the low-to-mid 70s to late 70s, with a substantial portion of life spent in good health.
  • On average, about $69$ years of life may be lived in good health; about $9.8$ years may involve some impairment or disability.
  • These figures are meant to convey the idea that healthy years out of total life expectancy are substantial, but disability-free years may vary by person and over time.
• Leading causes of death (top three):
  • $ext{Heart disease}$
  • $ext{Cancer}$
  • $ext{Chronic lower respiratory diseases}$
• A common lifestyle factor linking the top three causes: $ext{smoking}$.
• Additional observation: lifestyle factors (diet, physical activity) contribute significantly to deaths outside the top three as well.
• The chart’s purpose: emphasize the importance of reading statistics clearly, recognizing yearly scales, and noting where data come from rather than focusing on perfect numbers.

Health promotion and public health programs: scope and goals

• Health promotion: a field aimed at promoting healthy behaviors and enabling people to control their health decisions; seen as part of the broader public health umbrella.
  • Examples include improving access to healthy foods, finding nearby grocery stores, and reducing barriers to healthy choices.
• The Affordable Care Act (ACA): broadened access to health insurance, including keeping young adults on parental plans up to age 26; reduced some barriers to care for young people and others.
• Healthy People initiative: a federal-level, ten-year planning framework that sets national health goals.
  • Healthy People 2020 and Healthy People 2030 are mentioned; goals are updated every decade.
  • California participates in Healthy People initiatives at the state/federal level.
• Example 2020 targets (illustrative subset):
  • Reduce the proportion of adults who use cigarettes: baseline ext{2008} = 20.6 ext{%}, target to 12.0 ext{%}.
  • Increase the proportion of adults who meet federal guidelines for exercise: baseline ext{2010} ext{ or similar} = 18.2 ext{%}, target to 21.3 ext{%}.
  • Inclusion of new targets (e.g., baby products) as guidelines evolve.
• Broader implication: public health targets drive interventions and policy changes aimed at reducing obesity, increasing physical activity, promoting healthier birth outcomes, and more.

Health disparities, environment, and life expectancy differences

• Health disparities: differences in health outcomes across groups due to biology, geography, income, education, and access to resources.
• ZIP code effects: recent data show life expectancy differences by ZIP code, reflecting local access to resources, healthcare, environment, and opportunities.
• Nature vs. nurture: health is shaped by biology, personal habits, family history, access to resources, and environment.
• Real-world relevance: where you live and your access to healthcare influence wellness and outcomes more than personal choices alone in some cases.

Health behavior, motivation, and behavior change concepts

• Personal health habits and change readiness:
  • Students may identify barriers to healthy behaviors (e.g., cooking healthy foods, time constraints, social triggers).
  • Some may need aids like nicotine replacement therapy (e.g., nicotine patches) or other supports when attempting behavior change.
• Motivation and readiness to change:
  • Self-efficacy: belief in one's ability to achieve a change; low self-efficacy can hinder progress.
  • Locus of control: perceived degree of control over life outcomes; some feel more in control, others feel less so due to circumstances.
  • Pros and cons analysis helps build motivation and steer goal selection.
• The transtheoretical model (stages of change):
  • Precontemplation: not considering change.
  • Contemplation: thinking about change.
  • Preparation: planning and gathering information.
  • Action: actively making changes.
  • Maintenance: sustaining new behavior over time.
  • Termination: fully integrated change with no temptation to revert.
  • Relapse: can happen at any stage; can return to earlier stages and re-engage.
• Practical nuance:
  • People may relapse on some days but can re-enter the cycle at any stage without fully abandoning the goal.
  • External factors (seasonal changes, school stress) can influence progress; plan for challenges and include grace periods.

SMART goals, personal contracts, and journaling

• SMART goal framework (as presented):
  • Specific: clear, well-defined action.
  • Measurable: must be possible to quantify success.
  • Attainable: realistically achievable (the lecturer emphasizes using the term “Attainable” rather than “Achievable”).
  • Realistic: sensible given current constraints; avoid overly aggressive commitments.
  • Time-bound: specify a deadline or duration, with a 21-day period used for the class project.
• Example SMART exercise from lecture:
  • “Five compliments to strangers” as a specific, measurable, and time-bound task; students are urged to consider attainability and realism.
• Personal contract
  • The contract is the written SMART goal that will be shared with the instructor.
  • If a student needs to adjust the goal after approval, there is a grace period before starting;
    changes can be made prior to starting the project.
• Journaling and data collection:
  • 21 journal entries over 21 days (roughly five days per week, allowing two rest days).
  • Journals should be typed and include:
  • Details about the goal, actions taken, dates/times, and measurements.
  • Thoughts, feelings, perceptions, barriers, and facilitators.
  • Specifics about what was eaten, activities performed, or steps taken.
  • Journals can be presented as a table or narrative; include emotions and reflections, not just counts.
  • Rest days should be described (e.g., how rest day felt, emotional state, readiness for next day).
• Planning and implementation strategy:
  • Monitor behavior and collect data to understand what helps or blocks progress.
  • Provide a plan of action and commit to the plan; revisit reasons for change and strategies.
  • Use rewards and support from others; consider changing the environment to reduce triggers.
  • Prepare for challenges (e.g., adjustments during the first weeks of school, traffic patterns, workload).
• Relapse planning and coping:
  • Recognize that setbacks happen and do not require abandoning the goal.
  • Use relapse planning to re-enter the cycle at an appropriate stage without punishment.
• Social support and motivation:
  • Involve others for accountability and encouragement.
  • Rewards can be intrinsic (personal satisfaction) or extrinsic (time off, preferred activities).
• Resource considerations:
  • Exercise, diet, and other health goals should rely on free or low-cost resources when possible; avoid unnecessary purchases.
  • Environmental changes are encouraged to support the goal (e.g., healthier food options, reduced exposure to triggers).

Practical implications and classroom application

• The overarching aim is to empower students to read and interpret health statistics critically and to apply health-promoting strategies in real life.
• Students will be asked to approve a SMART goal and begin journaling; the assignment emphasizes planning, self-reflection, and iterative improvement.
• In-class prompts may include discussing the effectiveness of public health programs, such as ACA and Healthy People initiatives, and examining how policy affects individual behavior.

Connections to broader public health principles

• Public health as an umbrella discipline that includes health promotion, disease prevention, and equitable access to resources.
• The role of policy and environmental change in enabling healthier choices at the population level.
• The interplay between personal behavior, social determinants, and health outcomes, including how ZIP code and SES influence longevity and quality of life.
• The importance of critical data literacy when interpreting health statistics reported in media and public sources.