Paprika contains an antibacterial protein that has been found to naturally control (by limiting the growth of) certain bacteria such as Salmonella and E. coli that are transferred through ingestion. Considering typical treatment is chemical, paprika may provide an alternate treatment for people poisoned by these particular illness-inducing bacteria (although further testing is necessary).
A diet that includes paprika may not stop these bacteria, but it could slow their growth. Considering the serious illness that often follows ingestion of Salmonella or E. coli, this could greatly affect the severity of the condition.
Paprika is a stimulant that can have a marked effect on the cardiovascular system. It can improve circulation and even help normalize blood pressure. Along with vitamin C, this gives users a double whammy of heart-healthy benefits.
It can also aid in digestion through a boost in saliva and stomach acids (as such, it can also be used to treat indigestion). Interestingly, high doses of paprika may interact with some other medications to cause drowsiness, so if you plan to add it as an herbal supplement to your diet, you may want to first consult a physician.
The many healthy benefits of paprika can easily be lost through the wrong processing. Commercially-dried peppers, for instance, are exposed to high heat environments that can easily leach away most of the vitamins and nutrients present.