Oh? You can't use lethal injections. Spoils the organs and wrecks the patient's salvage value. Similar for machine guns, daggers, bow and arrows, machetes, spears, artillery and small nukes. According to major league rules, you can't even use a baseball bat if the batter has used steroids.
Really, murder should be tested on lab rats first, to make sure it's safe. The PETA and Animal Liberation Front types would scream about it and turn all your lab rats loose in downtown Palm Springs, but you have to start somewhere.
Well hell, what does starvation do to vital organs? One would think they would desicate and be completely useless! How about the victims of car wrecks? What shape are their organs in???