English Exit Test — Set 2 (ข้อสอบวัดผลหลังเรียน)

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The Country I Chose: A Letter to America on Her 250th Birthday

July 4, 2026 · The Semiquincentennial

The Country I Chose

A Letter to America on Her 250th Birthday

By Snea Thinsan, Ph.D. (Piangdin Rakthai) — a citizen of five years, a resident of twenty-five, and a grateful man for life

I was not born under this flag, and I did not first arrive under it as a man in flight. I arrived in 2001 as a Fulbright scholar — a rice farmer's son from northern Thailand whom the American people, for reasons I still find astonishing, chose to educate at their own expense. Years later, when my work for democracy made it impossible to return safely to the country of my birth, this same nation sheltered me a second time, as a seeker of political asylum. Five years ago I raised my right hand and swore to defend a Constitution older than any other written national charter still in force on this earth. So I owe America twice: once for my mind, and once for my life. Today, on the two hundred and fiftieth birthday of the United States, I want to begin repaying that debt by saying something to my fellow citizens — especially those who feel too weary, too angry, or too disappointed to hang a flag on the porch this morning.

You may have inherited this country. I had to earn it, document by document, year by year, across a quarter of a century. And when a person has to earn something, he tends to count its value more carefully than someone who has never lived a single day without it. So permit an immigrant, on this of all days, to do the counting out loud.

What Distance Teaches

Let me tell you where I measure from. I was born the first son of a poor rice-farming family of nine children in Phayao Province, in the far north of Thailand. I went to school with no lunch and no lunch money, drinking tap water to quiet my stomach, wearing donated uniforms that never quite fit. I nearly missed my one chance at a university education because I could not afford the registration fee for the entrance examination; kind teachers rescued me, as kind teachers so often rescue the world. From that beginning, scholarships carried me to Australia, then to England, and finally — on the American people's own Fulbright Program — to a doctorate at Indiana University. In 2006, an American university sent me onward to Kabul, funded by American foreign aid, to help rebuild English education in Afghanistan's shattered universities.

So when I say I have seen Afghanistan, I do not mean in a documentary. I lived and worked there, and I saw with my own eyes what a society looks like when the institutions Americans complain about simply do not exist: no independent court to appeal to, no free press to expose the powerful, no ballot that means anything, no assumption that a knock on the door at midnight requires a warrant.

And there is one more chapter I must confess, because it makes this letter almost embarrassingly circular. My first real job, beginning in 1987, was teaching English in a refugee camp in Chonburi, Thailand — the Phanat Nikhom Processing Center, sponsored by the U.S. State Department — preparing Indochinese refugees, children of seven and grandmothers of fifty-nine, for their new lives in the United States. For five years I taught other people how to become Americans. I stood at the blackboard explaining supermarkets and school buses and the strange American habit of smiling at strangers, never imagining that the country I was describing would one day take me in as well. The refugees I taught went ahead of me by decades. Somewhere in this country today are grandmothers, engineers, and shop owners who first heard the word freedom pronounced in my Thai accent. On this birthday, I suspect some of them are flying the flag. I write this letter partly for them.

This is the first thing distance teaches: the things Americans argue about most bitterly — elections, judges, journalists, schools, borders — are the things most of humanity has never been permitted to argue about at all. The argument itself is the privilege. In much of the world, the argument is a crime.

The second thing distance teaches is harder to say politely, so I will say it plainly. Americans have developed a strange habit of describing their country the way an heir describes an inherited mansion: cataloguing every crack in the plaster while forgetting that billions of people are standing outside in the rain, hoping for a room. There is no more reliable measure of a nation's worth than the direction people walk when they are free to walk. For two and a half centuries, they have walked toward this one. The United States today is home to more immigrants than any other country on earth — not because we are naïve about its flaws, but because we have lived without its virtues.

The Facts, Plainly Stated

None of what follows is flattery. It is arithmetic.

The United States remains the largest economy the world has ever known — roughly a quarter of all global output produced by less than five percent of the world's people — and the dollar remains the currency in which the rest of the planet stores its trust. It is the world's largest producer of oil and natural gas and, at the same time, one of its largest engines of clean-energy investment. Its farms help feed nations its farmers will never see.

Its people invented, or carried to maturity, the technologies that define the modern age: the airplane, the transistor, the integrated circuit, the personal computer, the internet, GPS, and now the artificial intelligence systems reshaping every field of human effort. It put human beings on the Moon and brought them home. Its scientists have won more Nobel Prizes than those of any other nation — many of them born elsewhere, which is not an asterisk on American achievement but the very heart of it. Its universities remain the destination of the world's most ambitious students, drawn from nearly every country on the map, including the countries whose governments denounce America most loudly. I know this pull personally: it reached all the way into a rice paddy in Phayao and lifted a boy out.

Its citizens give away more than half a trillion dollars to charity every single year — more than the entire economic output of most nations — and they do it not because a ministry orders them to, but because generosity is stitched into the culture at a depth foreigners rarely appreciate until they live here. When there is an earthquake in Turkey, a famine in the Horn of Africa, a tsunami in Asia, the airplanes that arrive first are, more often than not, American. I spent five years of my youth inside one small example of that generosity: a refugee camp on Thai soil, paid for by American taxpayers who would never meet a single person it saved.

Its military remains the most capable ever assembled, and whatever one thinks of any particular use of it, this fact remains: the open sea lanes on which every trading nation depends, including America's rivals, are kept open largely by the United States Navy. The global order that allowed Asia to rise, Europe to rebuild, and my own homeland to prosper was, whatever its imperfections, an American construction.

And its culture — its music born in cotton fields and church pews and city basements, its films, its literature, its games, its slang — is the closest thing our species has to a common language. A teenager in Bangkok, a taxi driver in Lagos, and a grandmother in Warsaw can all hum something American. No empire in history achieved that by persuasion rather than conquest.

The argument itself is the privilege. In much of the world, the argument is a crime.

The Honest Ledger

Now, I promised to tell the truth, and the truth has a second column.

This country began with words so beautiful that their author knew they were not yet true: all men are created equal, written in a land that held human beings in bondage. It dispossessed the peoples who were here first. It fought its bloodiest war against itself. It has known lynching and internment, red scares and riots, poverty amid plenty. Today it struggles with gun violence no other wealthy nation tolerates, with a healthcare system of miraculous medicine and merciless bills, with inequality that would embarrass its founders, and with a political division so deep that neighbors have stopped speaking and some citizens cannot bring themselves to fly the flag on the nation's own birthday.

I will not pretend otherwise. I have spent my life studying how power abuses truth, and I did not stop studying when I became an American.

But here is what a quarter-century inside this country, and four decades outside it, has taught me: every nation on earth carries a ledger like this. Every one. The difference — and it is the whole difference — is what a nation is able to do about its own failures. Most of the countries I have known bury their sins, jail the people who mention them, and rewrite the textbooks. America publishes its sins, teaches them in its schools, litigates them in its courts, marches about them in its streets, and makes Oscar-winning films about them. The self-criticism that visitors mistake for national decline is, in fact, the immune system of a free society. Dictatorships never sound troubled. Graveyards are very quiet places.

Frederick Douglass understood this in 1852, when he stood before a white audience and asked what the Fourth of July could possibly mean to an enslaved man — and then, in the same speech, refused to give up on the Declaration, calling its principles saving principles and demanding the country live up to them. A century later, Martin Luther King Jr. described those founding promises as a promissory note America had defaulted on — and then insisted the note be paid rather than torn up. This is the great American inheritance that both the flag-wavers and the flag-skeptics forget: the critics who loved this country most never asked less of it. They asked more. And astonishingly, again and again — through abolition, through women's suffrage, through the civil rights revolution — the country paid. Slowly, painfully, incompletely, but it paid, and it is still paying. Two hundred and fifty years is not the story of a perfect nation. It is the story of a self-correcting one, and self-correction is the rarest political achievement in human history.

The Summer the World Came to Visit

There is a lovely coincidence in the calendar this year. As America turns 250, the World Cup is being played on its soil, and the tournament has already broken the all-time attendance record — a record that had stood since 1994, the last time this country hosted the world's game. Today, on the anniversary itself, tall ships and naval vessels from dozens of nations fill New York Harbor in the largest maritime gathering in American history, sailing past the Statue of Liberty — herself an immigrant, a gift — who has watched, for a hundred and forty years, the arrival of people like my former students, and people like me.

Millions of visitors from Europe, Asia, Africa, and Latin America are moving through American cities this summer, and many of them are discovering what immigrants have always known: that the country in person is warmer, safer, more generous, and more casually kind than the country on the news. This is not because journalists are villains; conflict is simply what cameras are built to find. But no camera captures the stranger who drives you forty minutes out of his way, the church that furnishes a refugee's first apartment, the small town that shows up, casserole in hand, when a neighbor's barn burns. I have received all three. That America — the enormous, quiet, decent America between the headlines — is the one I became a citizen of.

The Flag Belongs to All of You

Which brings me to the porch, and the flag that some of you cannot bring yourselves to raise this morning.

I understand the hesitation. Some of you feel the flag has been captured by people you disagree with; some of you feel the country has drifted from what you believe it should be; some of you are simply exhausted. But hear an immigrant's plea: the flag is not a party's logo, and it is not a president's property — not this one, not the last one, not the next one. It flew before every living politician was born and it will fly after every one of them is forgotten. When you surrender it to the faction you oppose, you do not punish them. You disinherit yourself.

The people whose persecution drove me from my homeland would be delighted to see Americans too divided to celebrate their own founding. Authoritarians everywhere tell their subjects the same bedtime story: that freedom leads only to chaos, that self-government is a delusion, that the American experiment is finally failing. Every flag that stays in the closet on this particular birthday is a small gift to that story. Every flag that goes up — flown by a liberal, a conservative, an independent, a new citizen still practicing the anthem — is a small rebuttal.

Gratitude is not complacency. You can fly the flag in the morning and write your congressman a furious letter in the afternoon; indeed, that combination is roughly the definition of citizenship. Love of country that admits no criticism is idolatry, and criticism of country that admits no love is ingratitude. The Fourth of July asks for neither. It asks only that once a year we look up from the argument long enough to remember what the argument is for.

A Letter to 2276

In Philadelphia today, a time capsule is being sealed, to be opened on July 4, 2276 — the five hundredth birthday. Think of that for a moment. Somewhere beyond our imagining, Americans not yet born will open a box packed by us, and they will judge what kind of ancestors we were in this anxious, quarrelsome, magnificent year.

I know what I would put in that box. Not a declaration of victory — the founders never promised victory, only pursuit. I would put in a naturalization certificate, mine, with its slightly crooked photograph of a rice farmer's son from Phayao who once went to school without lunch, who taught refugees bound for America years before he ever saw it, and who now belongs to the one country founded not on a tribe, a throne, or a bloodline, but on an idea that anyone, from anywhere, can adopt: that we are created equal, that our rights precede our rulers, and that government exists by our consent and at our pleasure.

Two hundred and fifty years ago, fifty-six men signed their names under that idea, knowing the signature might cost them their necks. It has since outlived every empire that laughed at it. It survived civil war, depression, world wars, assassinations, and its own repeated failures to honor it. It will survive our present quarrels too — but only if the people who hold it now remember that they hold something rare.

I do not forget. I cannot. I have seen the alternatives with my own eyes.

Happy 250th birthday, America — from a son you were not obliged to take in, and did. Twice.

★ ★ ★

About the author: Snea Thinsan, Ph.D. (Piangdin Rakthai) was born to a rice-farming family in Phayao Province, Thailand. He taught English to Indochinese refugees bound for U.S. resettlement at the Phanat Nikhom Processing Center (1987–1992), lectured at Chiang Mai University, studied in Australia and England, and came to the United States in 2001 as a Fulbright scholar, earning his Ph.D. at Indiana University Bloomington. He served the USAID-funded Afghanistan Higher Education Project in Kabul, taught at Ball State University, and is the founder of the Education for Peace Foundation and People's Research (สถาบันวิจัยประชาชน). He has lived in the United States for more than twenty-five years and has been a U.S. citizen for five. He writes at thinsan.org.

Historical references: the Declaration of Independence (1776); Frederick Douglass, "What to the Slave Is the Fourth of July?" (1852); Martin Luther King Jr., "I Have a Dream" (1963); the United States Semiquincentennial (America250 / Sail 4th 250, July 4, 2026); FIFA World Cup 2026, whose total attendance surpassed the 1994 U.S.-hosted record in June 2026; the Philadelphia semiquincentennial time capsule, scheduled for opening July 4, 2276.

บทวิเคราะห์เชิงวิชาการ: เปรียบเทียบ “National Security Strategy 2025” กับ “National Security Strategy 2022” ของสหรัฐฯ (ENG | ภาษาไทย)

Comparative Brief | NSS 2025 vs NSS 2022

บทวิเคราะห์เชิงวิชาการ: เปรียบเทียบ “National Security Strategy 2025” กับ “National Security Strategy 2022” ของสหรัฐฯ

โฟกัสที่ “กรอบคิด (ends) – วิธีการ (ways) – เครื่องมือ (means) – ลำดับความสำคัญเชิงภูมิภาค” โดยอ้างอิงจากตัวเอกสารเป็นหลัก และเสริมด้วยบทวิเคราะห์จากสถาบัน/สื่อคุณภาพเพื่อบริบท.

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1) วิธีวิทยาและขอบเขต (Method & Scope)

บทความนี้อ่าน NSS 2025 และ NSS 2022 ในฐานะ “เอกสารกรอบนโยบาย” ไม่ใช่คำมั่นที่เท่ากับการปฏิบัติจริงทั้งหมด จึงวิเคราะห์ที่ (ก) นิยามผลประโยชน์หลัก (ข) วิธีกำหนดพันธมิตร/คู่แข่ง (ค) เครื่องมือเชิงเศรษฐกิจ–ทหาร–การทูต และ (ง) การจัดลำดับภูมิภาค.

2) แกนยุทธศาสตร์: จาก “ผู้นำระเบียบโลก” → “อธิปไตยและผลประโยชน์ชาติเป็นศูนย์กลาง”

• NSS 2022 วางบทบาทสหรัฐเป็นผู้นำที่ “ยึดระเบียบโลกแบบมีกติกา (rules-based order)” และใช้เครือข่ายพันธมิตรเป็นทรัพยากรยุทธศาสตร์สำคัญ.
• NSS 2025 เน้น “อธิปไตย” และการต้านบทบาทองค์กรข้ามชาติที่ถูกมองว่า “บั่นทอนอธิปไตย” พร้อมย้ำว่ารัฐชาติควร “เอาผลประโยชน์ตนเองเป็นที่ตั้ง” และสหรัฐจะทำเช่นเดียวกัน.

3) โครงสร้างภัยคุกคาม: จาก “การแข่งขันมหาอำนาจ + ปัญหาร่วมโลก” → “ดุลอำนาจ + ความมั่นคงภายใน/ชายแดน”

• NSS 2022 วางกรอบ “การแข่งขันเชิงยุทธศาสตร์” ควบคู่กับ “shared challenges” โดยเฉพาะสภาพภูมิอากาศและโรคระบาด ซึ่งถูกจัดเป็นประเด็นระดับความมั่นคง.
• NSS 2025 ขยับน้ำหนักไปที่การคุมชายแดน การสกัดอิทธิพล/ปฏิบัติการชักจูงจากต่างชาติ และการจัดดุลอำนาจไม่ให้รัฐอื่น “ครอบงำ” จนกระทบผลประโยชน์สหรัฐ.

4) เครื่องมือหลัก: จาก “พันธมิตร-พหุภาคี” → “ธุรกรรม/ภาระแบ่งรับ + เครื่องมือการค้า”

• NSS 2022 ให้ความสำคัญกับการ “ทำงานร่วมกับพันธมิตรและสถาบันพหุภาคี” เพื่อจัดการคู่แข่งและปัญหาร่วม.
• NSS 2025 ระบุชัดเรื่อง burden-sharing และตั้งมาตรฐานการใช้จ่ายกลาโหมของ NATO (5% GDP) พร้อมใช้ “ข้อตกลงการค้าที่ตอบแทนกัน” และการทูตเชิงพาณิชย์เป็นคานงัด.

5) เศรษฐกิจความมั่นคง: จาก “ลงทุนแข่งขัน + พลังงานสะอาด” → “การค้าแบบสมดุล + ลดการพึ่งพาโซ่อุปทาน”

• NSS 2022 ผูก “ความน่าเชื่อถือเชิงผู้นำ” กับการลงทุนในประเทศและการเปลี่ยนผ่านพลังงานสะอาด (climate/energy security).
• NSS 2025 ตอกย้ำ “economic security = national security” ผ่านการปรับดุลการค้า ปกป้องอุตสาหกรรม และการคุมโซ่อุปทาน/วัตถุดิบสำคัญ พร้อมวิจารณ์แนวคิด Net Zero/Climate ideology ในเชิงลบ.

6) ลำดับความสำคัญเชิงภูมิภาค: “ซีกโลกตะวันตก” ถูกยกขึ้นเป็นศูนย์กลางใน NSS 2025

NSS 2025 เสนอ “Trump Corollary to the Monroe Doctrine” และกำหนดเป้าหมายซีกโลกตะวันตกแบบ Enlist & Expand (คุมการอพยพ ยาเสพติด cartel อิทธิพลนอกภูมิภาค และปรับกำลังทหารให้เทน้ำหนักกลับสู่ Hemisphere).

NSS 2022 แม้พูดถึงหลายภูมิภาค แต่ภาพรวมเน้นการสร้างความร่วมมือระหว่างประเทศเพื่อ “รักษาระเบียบโลกแบบมีกติกา” และรับมือ “shared challenges” ควบคู่การแข่งขันมหาอำนาจ. :contentReference[oaicite:9]{index=9}

7) เอเชีย/จีน: “ชนะอนาคตเศรษฐกิจ–หลีกเลี่ยงการปะทะทางทหาร”

NSS 2025 วางกรอบเอเชียโดยเน้นชัยชนะเชิงเศรษฐกิจและการป้องกันการเผชิญหน้าโดยตรง พร้อมวิจารณ์สมมติฐานเดิมเรื่องจีนเข้าสู่ rules-based order.

NSS 2022 ย้ำการแข่งขันระยะยาวกับจีนในฐานะคู่แข่งเชิงระบบ และใช้พันธมิตร/กรอบความร่วมมือในอินโด-แปซิฟิกเป็นฐานอำนาจ.

8) ตะวันออกกลาง & แอฟริกา: “ลดการทุ่มทรัพยากร–ย้ายจาก aid สู่ investment”

NSS 2025 ระบุว่าตะวันออกกลางจะไม่ “ครองความสนใจ” เท่าเดิม เน้นการ shift burdens และขยายสันติภาพโดยไม่กลับไปสู่ nation-building.

ในแอฟริกา NSS 2025 เสนอ “จากการเผยแพร่อุดมการณ์/ความช่วยเหลือ” ไปสู่ “การค้า-การลงทุน” แบบเลือกหุ้นส่วนรัฐที่มีศักยภาพ พร้อมหลีกเลี่ยงพันธะยาว.

ข้อสังเกตเชิงวิชาการ (เชิงเป็นกลาง):

• ความต่างหลักไม่ใช่ “มี/ไม่มี” การแข่งขันมหาอำนาจ แต่คือ การจัดลำดับและรูปแบบเครื่องมือ: NSS 2022 เน้น “coalitions + rules-based order + shared challenges” ขณะที่ NSS 2025 เน้น “sovereignty + balance of power + burden-sharing + commercial leverage”.
• NSS 2025 ให้ “ภูมิรัฐศาสตร์ใกล้บ้าน” เป็นแกน (Western Hemisphere) ซึ่งเป็นการสื่อสารเชิงยุทธศาสตร์ต่อทั้งพันธมิตรและคู่แข่งว่า “ทรัพยากรและความสนใจของสหรัฐมีข้อจำกัดและเลือกจัดวางใหม่”.

เอกสารอ้างอิงหลัก

• NSS 2025 (White House, Nov 2025): PDF.
• NSS 2022 (Biden-Harris Administration, Oct 2022): PDF.

บริบท/บทวิเคราะห์เสริม (อ่านประกอบ)

• Brookings – “Breaking down Trump’s 2025 National Security Strategy”.
• CFR – “Unpacking a Trump Twist of the National Security Strategy”
• Chatham House – “Trump’s new national security strategy…”.
• Financial Times – Monroe Doctrine focus / hemispheric shift context.

Academic Comparative Analysis: U.S. National Security Strategy 2025 vs 2022

A document-centered comparison using an ends–ways–means lens and the ordering of regional priorities, drawing primarily on the strategies’ own text and supplemented with high-quality interpretive commentary for context.

1) Method & Scope

This analysis treats both NSS 2025 and NSS 2022 as strategic framing documents—signals of priorities and organizing assumptions rather than perfect predictors of implementation. It compares (a) the definition of core interests, (b) ally/adversary framing, (c) principal instruments (economic, military, diplomatic), and (d) regional ordering.

2) Strategic Center of Gravity: From “rules-based leadership” to “sovereignty-first national interest”

• NSS 2022 foregrounds U.S. leadership in sustaining a rules-based order and emphasizes alliances as a core strategic asset.
• NSS 2025 prioritizes sovereignty, explicitly criticizing “sovereignty-sapping” transnational institutions and encouraging states to pursue their own interests, with the United States doing the same.

3) Threat Architecture: From “great-power competition + shared challenges” to “balance of power + internal/hemispheric security”

• NSS 2022 couples strategic competition with a robust “shared challenges” agenda (notably climate and pandemics) treated as national security issues.
• NSS 2025 shifts emphasis toward border control, counter-influence concerns, and maintaining balances of power to prevent dominance by others.

4) Primary Instruments: From coalition-based multilateralism to burden-sharing and commercial leverage

• NSS 2022 elevates allied coordination and multilateral cooperation as key means for both competition and shared problems.
• NSS 2025 stresses burden-sharing (including a NATO spending benchmark) and positions reciprocal trade/commercial diplomacy as central tools.

5) Political Economy of Security: From clean-energy security framing to rebalancing trade and securing supply chains

• NSS 2022 links competitiveness and security to the clean-energy transition and climate-driven risk.
• NSS 2025 frames “economic security” as foundational, emphasizing rebalanced trade, industrial protection, critical supply chains/materials, and rejecting “Net Zero”/climate ideology.

6) Regional Ordering: Western Hemisphere becomes the organizing geographic priority in NSS 2025

NSS 2025 articulates a “Trump Corollary to the Monroe Doctrine” and an Enlist & Expand approach (migration control, counter-cartels, limiting extra-hemispheric influence, and military posture rebalancing).

NSS 2022 presents a broad global agenda oriented to coalition-building in support of a rules-based order while addressing shared challenges alongside competition.

7) Asia/China: “Win the economic future, prevent military confrontation” vs system competition via alliances

NSS 2025 frames Asia around economic advantage and avoiding direct military confrontation, criticizing prior assumptions about China integrating into a rules-based order.

NSS 2022 emphasizes long-term competition with China and relies heavily on allied capacity and Indo-Pacific coalitions.

8) Middle East & Africa: De-prioritization, burden shifting, and a move from aid to investment

NSS 2025 explicitly argues the Middle East should no longer dominate U.S. policy, emphasizing burden shifting and peace efforts without returning to nation-building.

NSS 2025 on Africa advocates transitioning from ideology/aid framing to trade-and-investment partnerships with capable states, while avoiding long-term commitments.

Neutral analytical takeaway:

• The key difference is less about whether strategic competition exists and more about priority ordering and instrument choice: NSS 2022 foregrounds coalitions, rules-based order, and shared challenges; NSS 2025 foregrounds sovereignty, balance-of-power logic, burden-sharing, and commercial leverage.
• NSS 2025’s hemispheric emphasis is a strategic signal that U.S. attention and resources are being intentionally reallocated—implicating allied expectations and competitive dynamics in the Americas.

Primary documents

• NSS 2025 (White House, Nov 2025): PDF.
• NSS 2022 (Biden-Harris Administration, Oct 2022): PDF.

Selected contextual commentary

• Brookings – “Breaking down Trump’s 2025 National Security Strategy”. :contentReference[oaicite:40]{index=40}
• CFR – “Unpacking a Trump Twist of the National Security Strategy”. :contentReference[oaicite:41]{index=41}
• Chatham House – “Trump’s new national security strategy…”. :contentReference[oaicite:42]{index=42}
• Financial Times – Hemispheric/Monroe Doctrine shift context. :contentReference[oaicite:43]{index=43}

Cannabis (Marijuana) Warning Statement — Youth & Families

Formal public-health statement: Cannabis (marijuana) is not harmless for teenagers

Audience: Teens, parents, and educators Focus: psychosis/schizophrenia risk, brain development, and safety

Cannabis today is often far more potent than many parents remember. For adolescents, the combination of early use, frequent use, and high-THC products is consistently linked to higher risk of serious mental-health outcomes—including psychosis and, in some people, long-lasting disorders such as schizophrenia.

Key facts parents and teens should know

• Earlier initiation and more frequent use are associated with a stronger link to psychosis and schizophrenia.¹
• Using cannabis before age 18 may affect how the brain builds connections for attention, memory, and learning; some effects may be long-lasting.²
• High-potency and daily use patterns have been linked to higher odds of psychotic disorders in epidemiological studies.³
• Cannabis use disorder (problematic use) is associated with increased schizophrenia risk—particularly noted among young men in large population research.⁴
• Beyond mental health, established risks include dependence, impaired driving/injuries, and cognitive/psychomotor impairment.⁵

A formal caution (for schools, families, and community leaders)

We urge teenagers and parents to treat cannabis with the same seriousness given to other illicit drugs—especially for youth. The popular framing of cannabis as “natural” or “safe” is not a health standard, and it is not a protection against harm. For adolescents, cannabis exposure can intersect with brain development and mental-health vulnerability in ways that are unpredictable and, for some individuals, life-altering.

The risk is not uniform: not every user develops psychosis or schizophrenia. However, public-health evidence consistently shows that earlier onset, heavier use, and higher THC potency are associated with greater risk of psychotic outcomes, including long-lasting disorders in some people. This is precisely why prevention and delay of initiation are recommended as the safest approach for youth.

Bottom line: For a developing brain, “seemingly harmless” can become “permanently consequential.” If you are under 25—especially under 18—the safest choice is not to use cannabis.

What parents can do (practical steps)

• Start early, talk often: Use calm, factual language; avoid shame-based messaging.
• Ask about potency and frequency: High-THC products and daily use carry higher risk signals.
• Know your family risk: A personal/family history of psychosis is a strong reason to avoid cannabis entirely.⁶
• Watch for mental-health warning signs: paranoia, hallucinations, severe anxiety, sleep disruption, social withdrawal, abrupt academic decline.
• Seek help early: Early assessment is safer than waiting for symptoms to escalate.

References (public health & peer-reviewed sources)

1. CDC — Cannabis and Mental Health (psychosis/schizophrenia association stronger with earlier & heavier use).
   https://www.cdc.gov/cannabis/health-effects/mental-health.html
2. CDC — Cannabis and Brain Health (use before 18 may affect attention, memory, learning; some effects may be long-lasting).
   https://www.cdc.gov/cannabis/health-effects/brain-health.html
3. Di Forti et al., The Lancet Psychiatry (2019) — Contribution of cannabis use (including daily/high-potency patterns) to incident psychotic disorder across European sites.
   https://www.thelancet.com/article/S2215-0366(19)30048-3/fulltext
4. NIDA/NIH news release (May 4, 2023) — Cannabis use disorder associated with increased schizophrenia risk (population-based study).
   https://nida.nih.gov/news-events/news-releases/2023/05/young-men-at-highest-risk-schizophrenia-linked-with-cannabis-use-disorder
5. CAMH / Lower-Risk Cannabis Use Guidelines (professional summary) — documented risks include cognitive/psychomotor impairment, psychosis, dependence, and injuries.
   https://www.camh.ca/-/media/files/lrcug_professional-pdf
6. Health Canada — Lower-Risk Cannabis Use Guidelines (avoid use with personal/family history of psychosis).
   https://www.canada.ca/en/health-canada/services/drugs-medication/cannabis/resources/lower-risk-cannabis-use-guidelines.html
7. Note: This statement is educational and not a substitute for medical advice. If a teen shows signs of psychosis (hallucinations, paranoia, severe confusion), seek urgent professional evaluation.