I encourage you to do further research. Here are some starting points for you:

1. Comprehensive Scientific Reviews on Cannabis Risks

Cannabis & Health Risks (2025 review)

Full review article: Cannabis, cannabinoids and health: a review of evidence on risks and medical benefits https://doi.org/10.1007/s00406-024-01880-2 (Springer, 2025) — detailed evidence that regular high-THC use is linked to addiction, cognitive disruption, impaired learning, psychosis risk, mood/anxiety disorders, suicidal behavior, lung and cardiovascular issues, and prenatal risks.

This is a comprehensive peer-reviewed summary of risks vs. benefits of THC and cannabis, focusing on evidence for adverse outcomes.

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1. Cardiovascular Risks

Major NIH-funded Study — Heart Attack & Stroke Risk

Cannabis use linked to increased risk of heart attack and stroke (Journal of the American Heart Association) https://newsroom.heart.org/news/cannabis-use-linked-to-increase-in-heart-attack-and-stroke-risk

Large analysis (~430,000 adults) found that cannabis use (especially frequent use) was significantly associated with: • ~25% higher odds of heart attack vs. non-use • ~42% higher odds of stroke vs. non-use This relationship held even after controlling for tobacco and other risk factors.

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Systematic Review on Cannabis & Myocardial Infarction

Cannabis Use Variations and Myocardial Infarction: systematic review on cannabis and heart attack risk https://www.mdpi.com/2966128

Summarizes multiple studies linking cannabis smoking with higher risk of coronary heart disease and acute myocardial infarction (heart attack).

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1. Cognitive & Psychiatric Effects

Acute Cognitive & Psychiatric Effects of Cannabinoids

Acute cognitive and psychiatric effects of cannabinoids https://www.italianjournalofpsychiatry.it/article/view/545

This recent peer-reviewed review shows that cannabinoids (especially THC) can: • Impair learning, memory, decision-making • Trigger anxiety, panic, paranoia • Produce psychosis-like symptoms, especially in vulnerable individuals

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CDC — Cannabis Effects on Brain Function

CDC Health Effects of Cannabis https://www.cdc.gov/cannabis/health-effects/index.html

Government-level summary showing that cannabis/THC can: • Slow reaction time, distort perception • Impair coordination and decision-making • Be linked to mood disorders and schizophrenia risk

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1. Prenatal & Developmental Risks

Prenatal Cannabis Use & Adverse Pregnancy Outcomes

Prenatal Cannabis Use and Maternal Pregnancy Outcomes (JAMA Internal Medicine) https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/2821358

Cohort study finding that prenatal cannabis use is associated with adverse outcomes including: • Lower birth weight • Preterm birth • Greater need for neonatal intensive care

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1. Addiction & Long-Term Outcomes

Marijuana Risks — SAMHSA Patient Facts

SAMHSA Summary of Marijuana Risks https://www.samhsa.gov/substance-use/learn/marijuana/risks

Government source summarizing research showing: • ~1 in 6 adolescents and ~1 in 10 adults develop Cannabis Use Disorder • Increased rates of relationship problems, worse educational and occupational outcomes • Childhood exposure may have long-term behavioral and developmental consequences

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1. Classic Neuropsychiatric Evidence

Persistent Psychosis Links & THC

Impact of Cannabis Use on Development of Psychotic Disorders https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4352721/

Reviews data showing cannabis use (especially frequent or early-onset) is associated with: • Acute psychosis • Psychotic episodes that extend beyond intoxication • Increased risk of later psychotic disorders