Since just about nobody has actually answered the question you have asked and the thread has instead turned into a debate over whether smoking cannabis is bad for you lungs or not I guess I will chime in with my 2 cents.
To start with, your worries about smoking cannabis negatively effecting the health of your lungs is well warranted. Smoking anything is bad for your lungs. Smoke is essentially composed of countless tiny particles of combusted material. It's never wise to inhale particulates if you can avoid doing so particularly given your history of asthma. Although studies have not been able to correlate lung cancer with cannabis smoking, which is actually a very interesting subject in an of itself, there is ample evidence pointing to heavy, chronic cannabis smoking causing other lung problems such as COPD. The fact that smoking cannabis does not appear to lead to cancer is so counter intuitive that it should be further investigated. It does perhaps suggest that cannabis really does have cancer preventing or fighting properties given that smoking just about anything should theory raise your risk of cancer.
Anyway, enough on that subject. You asked about the effects that edible cannabis could have on your "internal organs." Cannabis appears to have very little toxicity with long term use on any of your body's major organs. Countless government and lobbyist backed studies have been done desperately trying to link cannabis to any sort of real long term negative health consequences and despite this intense scrutiny they really haven't been able to find much. Seriously, aspirin and other NSAIDs like ibuprofen has been proven to be more dangerous by a considerable margin, killing approximately 15,000 people a year in this country usually from gastrointestinal hemorrhaging. It is ridiculously safe as far as its therapeutic window goes. You can literally take a thousand times the threshold dose and it won't kill you which is almost unheard of with just about any other drug or even food and drink for that matter. A thousand glasses of water would kill you for instance as would a thousand doses of just about any other medication you can think of.
Assuming you don't smoke it, the only organ that cannabis seems to have any sort of long term effects on is the brain and even those purported effects are often contradicted from study to study. All in all there is enough evidence to suggest that long term cannabis use probably isn't great for your memory and may have some negative effects on things like motivation but these effects happen independent of the method of ingestion. In other words if cannabis really does mess with your memory after long term use then it's going to do so regardless of whether you ate or smoked it.
To start with, your worries about smoking cannabis negatively effecting the health of your lungs is well warranted. Smoking anything is bad for your lungs. Smoke is essentially composed of countless tiny particles of combusted material. It's never wise to inhale particulates if you can avoid doing so particularly given your history of asthma. Although studies have not been able to correlate lung cancer with cannabis smoking, which is actually a very interesting subject in an of itself, there is ample evidence pointing to heavy, chronic cannabis smoking causing other lung problems such as COPD. The fact that smoking cannabis does not appear to lead to cancer is so counter intuitive that it should be further investigated. It does perhaps suggest that cannabis really does have cancer preventing or fighting properties given that smoking just about anything should theory raise your risk of cancer.
Anyway, enough on that subject. You asked about the effects that edible cannabis could have on your "internal organs." Cannabis appears to have very little toxicity with long term use on any of your body's major organs. Countless government and lobbyist backed studies have been done desperately trying to link cannabis to any sort of real long term negative health consequences and despite this intense scrutiny they really haven't been able to find much. Seriously, aspirin and other NSAIDs like ibuprofen has been proven to be more dangerous by a considerable margin, killing approximately 15,000 people a year in this country usually from gastrointestinal hemorrhaging. It is ridiculously safe as far as its therapeutic window goes. You can literally take a thousand times the threshold dose and it won't kill you which is almost unheard of with just about any other drug or even food and drink for that matter. A thousand glasses of water would kill you for instance as would a thousand doses of just about any other medication you can think of.
Assuming you don't smoke it, the only organ that cannabis seems to have any sort of long term effects on is the brain and even those purported effects are often contradicted from study to study. All in all there is enough evidence to suggest that long term cannabis use probably isn't great for your memory and may have some negative effects on things like motivation but these effects happen independent of the method of ingestion. In other words if cannabis really does mess with your memory after long term use then it's going to do so regardless of whether you ate or smoked it.