by Scarlet Palmer on 12/05/2011 | Uncategorized

Lester Grinspoon: Medicinal Cannabis

Dr Lester Grinspoon is Associate Professor Emeritus of Psychiatry at Harvard Medical School. Now one of the most respected and outspoken proponents of cannabis, Dr Grinspoon originally set out to prove it was a harmful drug. In 1967 he began research to scientifically define the dangers of marijuana. His studies led him to a surprising conclusion, the opposite of his hypothesis. Cannabis was not the dangerous drug that he, and the general public, had been led to believe it was.

Lester Grinspoon, MD

His book ´Marijuana Reconsidered´ (1971) reflected this reversal of opinion and was followed by several more, including ´Marijuana: The Forbidden Medicine´ in 1993. In 1996 he expressed his admiration for the Sensi Seed Bank collection of cannabis genetics in a letter which states:

“The Sensi Seed Bank is the most comprehensive cannabis genetics bank in the world and it is, from a medical point of view, essential it remains functioning and intact. It is little like preserving the rainforest because we know there are potential medicines there which must not be destroyed.”
Although many people associate the Netherlands with recreational cannabis, perhaps fewer know that medicinal marijuana has been available on prescription here for over a decade. Sensi Seeds is a fundamental part of the Dutch medical cannabis program: when medicinal company Bedrocan needed stable strains with powerful and reliable cannabinoid content, they chose Sensi Seeds genetics. It is a continuing source of pride to the company that our varieties were selected to help patients obtain the best possible medication for their needs.

Read more about Medicinal Cannabis »

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lester.... you da man!...


jay garcia

im/49 year old i have been smoking cannabis for 35years i used it for getting high and recreational use i was diagnosed with diabeties in 1995 it has helped my eating better and better sight and has helpt me on 2001 i went to the hospital for a discomfertin my body test results i was told i had cirocis in my liver i thought my life was over i kept drinking more and more till i allmost died of overdoses but at 2006 i have been sober since as of last year iv. been put on liver transplant list thanks to cannabis i get by easer day by day cannabis helps my appetite and vision i consider that alcohol should be illegle not cannabis for the usa should make it available for anyone within a legal age it has helped me trough all this so far


Sensi Seeds

Hello Jay,

Thank you very much for sharing your experience with us. I hope you won't mind but we have edited your comment to correct some spelling mistake.

About your question regarding the cannabis licence, we unfortunately cannot provide you with information as it depends on your local authority.
For the condition recognized by the Dutch government, you can visit the following page about the prescribed medical cannabis.



Hello from Finland and Russia!!!

You have enomous experiense about taking marijuanna, obviosly you feel that better then others.
I tottaly agree with you Jay about alchohol! It destroys everything in our bodies. Politics should think more about that seriously. I dont see any reason not to smoke cannabis.
Thank you for your story and hope you will be good!!!



jay garcia

i would like more information on cannabis licence i have glaucoma and liver disease and eating disorder please email me


petra graber

thank you mr. grinspoon; i have your book - in german marihuana die verbotene medizin - gelesen!! good wishes


Ben Sensi

Thank you Petra for sharing your comment with us.

Die Verbotene medizin is indeed a very good book and can also be purchased on our webshop.

If you speak German, make sure you have a look at our blog in German here:

Thanks again!



Hola, me llamo Matias y soy de Argentina, yo estoy usando marihuana hace 4 años, me dijeron que podía ser buena medicina para mi asma. pero veo que mi asma no se me mejora, la solución esta en un vaporizador. estoy buscando la forma de inventarlo:D. en fin desde el uso del cannabis e logrado, dormir mejor ya que mis noches eran de dormir una o dos horas y despertarme y volver a dormir era un fastidio y me terminaba desvelando. Aquí en Argentina es totalmente ilegal, solo puedes tener 1 planta y que no mida mas de 1 metro :S. y para que te den marihuana medicinal tienes que estar muriendo. = no te la dan jejej. bueno espero que algún día este buen fruto pueda ser legalizado y podamos usarlo en forma medicinal.



hi, i am luis and i got ran over by a drunk driver.i have dics problems and not eating or sleeping because of the meds the docters give me. i asked the dr to give me medical canabis. and they said no. when i smoke it makes me happy and i dont feel the dics pain as much,also i eat with my children and help with homework. and more important i sleep and wake up happy. i need help, i live in orlando fl. canabis helps my health so much that even my children what daddy to have it daily and more active walking and swimming. cannabis helps people. thank you dr LESTER for everything your are doing DR.



hi all im a 25 year old from australia, i have been smoking cannabis since i was 9 years old, i have phemonia, broncitus, asthma and i have had meningitus, as a result of the meningitus i now have extreem lumber problems,i am unable to get my wrists past my knees and have trouble gettin out of bed of a morning. if it wasnt for the weed that i smoke on a daily bases i wouldnt b able to get out of bed at all.
my lunges are better than they have ever been in my life and i still suffer from broncitus and phemonia.
it was only a few weeks ago that i had a scan on my lungs to see how damaged they are, and my doctor advised me to NOT QUIT smoking marijuana as my lungs would end up looking like a 80 year olds in less than a year if i was to stop skoming. i posted on here for the pure reason is that i believe that medial marijuana should be legalized every where, i hear about the problems people have and the praise that they have given medical marijuana for helping with just daily activities and wonder why it hasnt become legal already



what's the thc level &size


Ray S.

It was fantastic listening to Dr. Lester Grinspoon on Cannabis Nation Radio! He spoke about toking with astrophysicist Carl Sagan. It was a great show!


Alfredo Ballard

That is very attention-grabbing, You're a very skilled blogger. I've joined your rss feed and stay up for looking for more of your wonderful post. Additionally, I have shared your website in my social networks!


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