• MARIJUANA: Uses, Side Effects, Interactions and …
  • Adverse Health Effects of Marijuana Use | NEJM
  • The Effects of Marijuana on Your Body - Healthline

Oct 18, 2016 · WebMD examines marijuana use, including the physical and psychological effects as well as risks associated with the illegal drug commonly called

Physical effects of marijuana - Medical Search Engine

What Are The Positive Effects of Marijuana?

We examine the spillover effect of medical marijuana laws on educational attainment
On the other hand, several well-designed and large-scale studies, including one in Washington State (Rosenblatt et al, 2004), have failed to find any increased risk of lung or upper airway cancer in people who have smoked marijuana (Mehra et al, 2006; Tashkin, 2013), and studies assessing the association between marijuana use and cancer risk have many limitations, including concomitant tobacco use and the relatively small number of long-term heavy users – particularly older users. Therefore, even though population-based studies have generally failed to show increased cancer risk, no study has definitively ruled out the possibility that some individuals, especially heavier marijuana users, may incur an elevated risk of cancer. This risk appears to be smaller than for tobacco, yet is important to consider when weighing the benefits and risks of smoking marijuana. (Tashkin DP, 2013). More research on marijuana smoking and cancer is needed.

Marijuana Effects on the Brain & Body | Long Term & …

Marijuana Addiction - Symptoms, Signs and Side Effects …
The association between smoking marijuana and lung cancer remains unclear. Marijuana smoke contains about 50% more benzopyrene and nearly 75% more benzanthracene, both known carcinogens, than a comparable quantity of unfiltered tobacco smoke (Tashkin, 2013). Moreover, the deeper inhalations and longer breath-holding of marijuana smokers result in greater exposure of the lung to the tar and carcinogens in the smoke. Lung biopsies from habitual marijuana-only users have revealed widespread alterations to the tissue, some of which are recognized as precursors to the subsequent development of cancer (Tashkin, 2013).

 

What Are the Side Effects of High-THC Marijuana? | Leafly

Learn about the warning signs, symptoms and side effects of Marijuana Abuse and Addiction
In most states, patients need to fill out the application, pay a fee and provide identification information. To successfully receive an ID card in most states, patients need a signed statement from a doctor diagnosing the condition and a document stating that medical marijuana is the treatment recommended for the patient's particular condition and situation.

Marijuana Effects On Children | Children's Hospital Colorado
A 2011 systematic review of the research concluded that long-term marijuana smoking is associated with an increased risk of some respiratory problems, including an increase in cough, sputum production, airway inflammation, and wheeze – similar to that of tobacco smoking (Howden & Naughton, 2011). However, no consistent association has been found between marijuana smoking and measures of airway dysfunction. Occasional and low cumulative marijuana use has not been associated with adverse effects on pulmonary function (Pletcher et al., 2012); the effects of heavier use are less clear.


The Effects of Marijuana on Embryo Development

Additionally, many marijuana smokers also smoke tobacco, which further increases the harm. Numerous studies have found that the harmful effects of smoking marijuana and tobacco appear to be additive, with more respiratory problems in those who smoke both substances than in those who only smoke one or the other (Wu et al, 1988).

Marijuana does have side effects.

Two other conditions of concern, bullous lung disease (abnormal airspaces in the lungs caused by damage to the lung walls) and pneumothorax (“collapsed lung”), have not been definitively linked to marijuana smoke either (Tam et al, 2006). Several studies have found evidence of a possible association (Beshay et al, 2007; Hii et al, 2008; Reece, 2008), however, many of these studies featured 10 or fewer study subjects, some of whom also smoked tobacco. The research remains unclear.

Marijuana: Effects of Weed on Brain and Body - Live …

Naturally, research on respiratory effects of marijuana does not apply where marijuana is not smoked. Currently there are several alternative methods of administration available including devices with filters, vaporizers, and oral, sublingual, rectal, and transdermal ingestion.

Smoking devices that use water filters (bongs, e.g.) have been shown to involve equivalent amounts of tar and do not reduce risks of marijuana smoke inhalation (Gieringer, 1996; Bloor et al, 2008).

The Effects of Marijuana Use - Drug Abuse Treatment

Marijuana smoke contains a similar range of harmful chemicals to that of tobacco smoke (including bronchial irritants, tumor promoters and carcinogens) (Hoffmann et al, 1975). As inhaled smoke comes into contact with airway and lung before being absorbed into the bloodstream, it is likely to affect the respiratory system (Novotny et al, 1982).

Risk of respiratory effects from inhaling marijuana smoke are heightened by the more intensive way in which marijuana is smoked -- when smoking marijuana compared to tobacco, there is a prolonged and deeper inhalation and it is smoked to a shorter butt length and at a higher combustion temperature. This results in approximately 5 times the carbon monoxide concentration, 3 times the tar, and the retention of one-third more tar in the respiratory tract. Higher levels of ammonia and hydrogen cyanide have also been found in marijuana smoke, compared to tobacco (Moir, et al., 2008; Wu et al., 1988; Tashkin et al., 1991; Benson & Bentley, 1995).