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Table 3 Frequencies of “most important” negative health effects associated with cannabis use reported by Canadian youth and young adults (N = 870)

From: Cannabis health knowledge and risk perceptions among Canadian youth and young adults

 

%

(N)

Physical concerns

 Decreased brain function, cognitive abilities

24.7

(215)

 Respiratory function

23.8

(207)

 Addiction

16.4

(143)

 Carcinogenic

9.7

(84)

 Harmful effects from smoking

7.2

(63)

 Hunger/“munchies”

6.7

(58)

 Drowsiness

6.1

(53)

 General detriment to health

5.4

(47)

 Issues with circulation, heart palpitations

5.3

(46)

 Dry mouth

3.6

(31)

 Youth health, developmental concerns

3.0

(26)

 Bad/“gross” smell

2.6

(23)

 Drug interactions, concerns about tainted product

2.1

(18)

 Obesity

2.0

(17)

 Dizziness

1.8

(16)

 Nausea

1.6

(14)

 Red eyes

1.5

(13)

 Vision problems

1.4

(12)

 Sexual health

1.4

(12)

 Death

1.1

(10)

Psychological Concerns

  

 Reaction time related to driving or other activities

9.3

(81)

 Mental health issues

9.3

(81)

 Judgment/Inhibition issues

8.5

(74)

 Memory loss

8.4

(73)

 Loss of motivation

7.5

(65)

 Anxiety/panic

5.5

(48)

 Depression

3.7

(32)

 Hallucinations

3.7

(32)

 Loss of concentration

3.7

(32)

 Paranoia

3.4

(30)

 Being high

1.6

(14)

 Schizophrenia

1.1

(10)

 Psychosis

1.1

(10)

Social concerns

  

 Gateway drug

1.7

(15)

 Behavioural changes

1.5

(13)

 Money problems

1.0

(9)

Do not know/refused

  

 Do not know

10.0

(87)

 Refused

1.7

(15)

  1. *Concerns accounting for < 1% of overall responses are omitted here