Cannabis has been used as a medicine for thousands of years, all over the world.  In the 19th and early 20th centuries, it was widely used in western medicine. Cannabis prohibition forced cannabis outside of legal  medicine, and severely limited research opportunities.
Illustration Cannabis Sativa

Below you will find some interesting information on the plant's unique chemical constituents, called cannabinoids, and about the different strains of the plant and their therapeutic effects.

Cannabinoids:

Cannabis contains hundreds of chemical constituents, with over 60 cannabinoids, which are specific to cannabis. Each strain of cannabis contains different ratios of cannabinoids,  which together work synergistically to provide its therapeutic effects. The human body has endogenous cannabinoid receptor sites in its nervous and immune systems throughout the body.

It is not conclusive exactly what each cannabinoid does, and how they interact. The following information comes from limited research, and in part from Marijuana Medicine, Christian Ratsch, 2001.

  • The main cannabinoid in cannabis is delta-9-tetrahydrocannabinol (THC). THC has psychoactive, euphoric, stimulant, muscle-relaxing, anti-epileptic, anti-emetic, anti-inflammatory, appetite stimulating, bronchiodilating, hypotensive, antidepressant, and analgesic effects. High potency cannabis contains at least 15% THC.
  • Cannabidiol (CBD) is another main cannabinoid. CBD lessens the psychoactive effects of THC, and has sedative and analgesic effects.
  • Cannabichromene (CBC) promotes the analgesic effects of THC and has sedative effects.
  • Cannabigeral (CBG) has sedative effects and antimicrobial properties, as well as lowers intraoccular pressure. It is the biogenetic precursor of the other cannabinoids.
  • Cannabinol (CBN) is a mildly psychoactive degradation of THC; its primary effects are to lower intraocular pressure and anti-epileptic.

Cannabis Strains:

There are two main families of cannabis plants, INDICA and SATIVA. There are many strains of the plant, some pure Indicas, some pure Sativas, and others crosses of the two. Each strain of cannabis contains different ratios of cannabinoids, thus giving them a unique therapeutic effect.

Sativas:

Generally, the Sativa plant is a taller and lankier variety,  characterized by narrow serrated leaves and loose spear-like flower clusters that can be extremely resinous.

The primary effects of Sativas are on the mind and emotions. These benefits can be particularly helpful for the psychological aspects of many illnesses, giving people an increased sense of well-being. Due to the stimulating nature of Sativas, they are generally better for daytime use. Caution should also be taken for people experiencing hightened anxiety or those with mental health conditions.

Some therapeutic uses of Sativas:

  • Reduces depression, elevates mood
  • Relieves headaches and migraines
  • Energizes and stimulates
  • Increases focus and creativity
  • Reduces nausea
  • Stimulates appetite

Indicas:

Indica plants are normally shorter and stockier plants than Sativas. They have wide, deeply serated leaves and a compact and dense flower cluster.

The effects of Indicas are predominantly physical and sedative. Due to the relaxing nature of Indicas, they are best used for non-active times of the day, and before bed.

Medical Marijuana Flower
Some therapeutic uses of Indicas:

  • Reduces pain
  • Relaxes muscles
  • Relieves spasms
  • Reduces inflammation
  • Aids in sleep
  • Reduces anxiety and stress
  • Reduces nausea
  • Stimulates appetite
  • Relieves headaches and migraines
  • Reduces intra-ocular pressure
  • Anti-convulsant
  • Reduces seizure frequency

Cross Strains:

Hybrid strains are the result of cross pollination of various strains. The characteristics, and hence the effects, of one strain will usually be dominant. 
  • An Indica-dominant cross will be effective for pain relief, with the Sativa component helping with energy and activity levels. Such a strain is ideal for daytime pain relief.
  • A Sativa-dominant cross will be helpful in stimulating the appetite, with the Indica component increasing muscle relaxation. This strain would be ideal for daytime appetite stimulation.
  • All strains of cannabis may increase appetite and reduce nausea, however crosses are reported to work most effectively.

oregon medical marijuana - Google News

http://news.google.com/news?pz=1&ned=us&hl=en&q=oregon+medical+marijuana

Clackamas County commissioners adopt medical marijuana 1-year ban - The Oregonian

- Thu, 24 Apr 2014 22:17:01 GMT


Clackamas County commissioners adopt medical marijuana 1-year ban
The Oregonian
Bernard and most of his fellow commissioners conceded that medical marijuana does seem to benefit some patients, and Oregon is likely to legalize recreational marijuana in the next few years. But, they also insisted that the moratorium was important to ...
Clackamas County Approves Moratorium On Medical MarijuanaOPB News
Clackamas Co. approves pot dispensary moratoriumKOIN.com

all 17 news articles »

Medical marijuana in Oregon: Sellwood-Moreland residents push city leaders for ... - The Oregonian

- Wed, 23 Apr 2014 21:59:02 GMT


Medical marijuana in Oregon: Sellwood-Moreland residents push city leaders for ...
The Oregonian
Portland's top officials are engaged in a ?relatively active discussion? about whether to impose a moratorium on medical marijuana dispensaries and, if not, how to regulate the establishments, an aide to Mayor Charlie Hales said Wednesday. Josh Alpert ...

Medical marijuana in Oregon: More than 100 cities and towns impose ... - The Oregonian

- Mon, 21 Apr 2014 16:49:00 GMT


The Weed Blog (blog)

Medical marijuana in Oregon: More than 100 cities and towns impose ...
The Oregonian
The number of cities imposing moratoriums on medical marijuana dispensaries continues to rise, according to the latest data from the League of Oregon Cities. As of last week, 104 cities and towns in Oregon have enacted at least temporary bans. Of those ...
Come Support Safe Access To Medical Marijuana In Clackamas CountyThe Weed Blog (blog)
Marijuana dispensaries in limbo as moratoriums sweep stateKATU
More Than 100 Oregon Cities Pass Marijuana MoratoriumsKVEW

all 28 news articles »

Medical marijuana: Washington County adopts one-year ban on dispensaries - The Oregonian

- Wed, 23 Apr 2014 06:12:57 GMT


Medical marijuana: Washington County adopts one-year ban on dispensaries
The Oregonian
The Washington County Board of Commissioners voted Tuesday, April 22, to enact a one-year ban on medical marijuana dispensaries in unincorporated areas. (AP Photo/Ted S. Warren). Print · Simina Mistreanu | smistreanu@oregonian.com By Simina ...
A plea for pot: The fate of a medical marijuana business rests on voteKATU

all 3 news articles »

Medical marijuana in Oregon: Pot growers form political action committee - The Oregonian

- Tue, 15 Apr 2014 17:52:20 GMT


KVAL

Medical marijuana in Oregon: Pot growers form political action committee
The Oregonian
Medical marijuana farms, like this one in southern Oregon, fall under the Oregon Medical Marijuana Program. A group of growers has formed a political action committee to push for regulation and protection for Oregon's cannabis growers.
70-plus Oregon cities impose medical marijuana dispensary moratoriumsThe Register-Guard

all 34 news articles »

Nearly 100 Oregon cities have imposed a moratorium on medical marijuana ... - Statesman Journal

- Sat, 19 Apr 2014 05:10:47 GMT


Nearly 100 Oregon cities have imposed a moratorium on medical marijuana ...
Statesman Journal
Polk County Commissioners hold a public hearing in Dallas, Wednesday, April 16, 2014. The Polk County Commissioners unanimously voted for a one-year moratorium for medical marijuana dispensaries in the county. / KOBBI R. BLAIR / Statesman Journal ...

Medical marijuana in Oregon: East County cities considering one-year ... - The Oregonian

- Wed, 09 Apr 2014 21:36:06 GMT


Yahoo News

Medical marijuana in Oregon: East County cities considering one-year ...
The Oregonian
Council member Scott Harden was the dissenter in the 3-1 vote. He said that he believes Oregon will follow Washington and Colorado in legalizing marijuana for recreational use as early as November. Such a vote would make medical marijuana far less ...
Some Oregon cities say no to pot dispensaries for nowYahoo News
New Marijuana RulesThe Tribune News
Columbia County imposes a year-long medical marijuana moratoriumLongview Daily News
Newsmax.com
all 15 news articles »

Oregon's Marijuana Shops Tighten Rules - OPB News

- Tue, 08 Apr 2014 14:44:08 GMT


The Republic

Oregon's Marijuana Shops Tighten Rules
OPB News
The extra scrutiny is new to these holders of Oregon medical marijuana cards waiting to enter a room with medicines priced at $140 to $290 an ounce, depending on the strain, grower and other factors. Until now, medical pot shops have operated in a gray ...
New Oregon dispensary rules put medical marijuana shops under added scrutinyThe Republic

all 32 news articles »

Medical marijuana dispensary moratoriums approved in Gresham, Fairview - The Oregonian

- Fri, 18 Apr 2014 02:57:18 GMT


Times of San Diego

Medical marijuana dispensary moratoriums approved in Gresham, Fairview
The Oregonian
Like many cities and some counties across Oregon, Wood Village opted to impose a moratorium while legal issues are sorted out. Marijuana use remains illegal under federal law, but the Obama Administration has ... or zoning ordinances that required ...
Polk Co. public hearing on medical marijuana set for 9 a.m. todayStatesman Journal
Troutdale, Gresham might ban pot dispensariesKOIN.com
Lebanon City Council bans medical marijuana dispensariesLebanon Express
Sweet Home New Era
all 26 news articles »

Oregon Cities, Counties Enforce Medical Marijuana Dispensary Moratoriums - Jefferson Public Radio

- Sat, 12 Apr 2014 01:47:58 GMT


kgw.com

Oregon Cities, Counties Enforce Medical Marijuana Dispensary Moratoriums
Jefferson Public Radio
County commissioners and city councils are scrambling to pass medical marijuana dispensary moratoriums that comply with state law by the May 1 deadline. Senate Bill 1531 legalizes medical marijuana dispensaries in Oregon, but it also empowers counties ...
More medical marijuana dispensaries approved, including one in SalemStatesman Journal
West Linn City Council to debate medical marijuana dispensary moratoriumThe Oregonian
Corvallis dispensary gets green light from stateModesto Bee

all 24 news articles »