Analysis of Long-term Changes in United States Death Rates and Current Trends
美國死亡率長期變化分析及目前趨勢
Introduction
This report examines how the primary causes of death in the United States have changed from the 18th century to today, and provides recent data on the 2025 age-adjusted death rate.
本報告探討美國主要死因從18世紀至今的變化，並提供2025年年齡調整後死亡率的最新數據。
Main Body
Historically, American death patterns shifted from sudden infectious diseases to long-term chronic conditions. In 1776, because there were no antibiotics or clean water systems, many people died from diseases like smallpox and tuberculosis. During this time, life expectancy was only about 30 years, and many infants and mothers died during childbirth. By 1900, national statistics showed a transition; although pneumonia was still common, heart disease and cancer began to appear as major causes of death.
從歷史上看，美國的死亡模式從突發性傳染病轉向長期慢性疾病。在1776年，由於缺乏抗生素或乾淨的水系統，許多人死於天花和肺結核等疾病。當時，平均壽命僅約30歲，許多嬰兒和母親在分娩過程中死亡。到1900年，國家統計數據顯示出轉型；儘管肺炎仍然常見，但心臟病和癌症開始成為主要死因。
Improvements in public health, such as the creation of vaccines, the introduction of penicillin in the 1940s, and better water treatment, caused a sharp decline in deaths from infections. Furthermore, better surgery and newborn care helped increase life expectancy to nearly 80 years. However, living longer has led to a higher number of chronic illnesses. Experts emphasize that heart disease and cancer are now the main causes of death, which they attribute to poor diet and metabolic problems.
公共衛生的改善，例如疫苗的研發、1940年代引入盤尼西林以及更好的水處理，導致感染死亡人數大幅下降。此外，更好的手術和新生兒護理有助於將平均壽命提高至近80歲。然而，長壽也導致慢性病增加。專家強調，心臟病和癌症目前是主要死因，他們將其歸因於飲食不良和代謝問題。
Recent data from the CDC shows that the age-adjusted death rate dropped by 4.6 percent in 2025, reaching a record low of 689.2 deaths per 100,000 people. This decrease happened because there were fewer COVID-19 deaths and a significant drop in drug overdoses. The CDC asserts that this trend is due to better access to addiction treatments and the wider use of naloxone. Despite these improvements, racial disparities remain, as Black Americans still have the highest mortality rates.
CDC的最新數據顯示，2025年年齡調整後死亡率下降了4.6%，達到每10萬人689.2人死亡的歷史新低。這一降幅是因為COVID-19死亡人數減少以及藥物過量死亡人數顯著下降。CDC斷言，這一趨勢歸功於更容易獲得成癮治療以及納洛酮（naloxone）的廣泛使用。儘管有這些改善，種族差異依然存在，因為非裔美國人的死亡率仍然最高。
Conclusion
The United States has moved from a period dominated by infectious diseases to one characterized by chronic illnesses, with 2025 recording a record low in the overall age-adjusted death rate.
美國已從一個由傳染病主導的時期，轉變為一個以慢性疾病為特徵的時期，且2025年的整體年齡調整後死亡率創下新低。
Vocabulary Learning
⚡ The 'Cause-and-Effect' Power-Up
To move from A2 to B2, you must stop using only the word "because." B2 speakers use varied verbs and structures to show how one thing leads to another. This article is a goldmine for this.
🛠️ Leveling Up Your Vocabulary
Look at how the text describes a result. Instead of saying "X happened because of Y," it uses these B2-level alternatives:
- "Attribute to" "...which they attribute to poor diet." (Meaning: To say that something is the result of a specific cause.)
- "Led to" "...living longer has led to a higher number of chronic illnesses." (Meaning: To cause a particular situation to happen.)
- "Due to" "...this trend is due to better access to addiction treatments." (Meaning: A more formal way to say 'because of'.)
🏗️ The Structural Shift: From Simple to Complex
A2 Approach:
"People lived longer because medicines got better."
B2 Approach (The Bridge):
"Improvements in public health caused a sharp decline in deaths, which led to an increase in life expectancy."
Why this is better:
- It uses a Strong Verb (caused a sharp decline) instead of a simple adjective.
- It uses a Relative Clause (which...) to connect two ideas into one fluid sentence.
💡 Pro-Tip for Fluency
When discussing trends or history, try replacing "so" with "consequently" or "therefore."
- A2: It was raining, so I stayed home.
- B2: There was a significant drop in drug overdoses; consequently, the overall death rate reached a record low.