My right hand and foot are almost always colder than my left hand and foot, is there are a reason for this?

MUST BE a reason. But alas, mortals such as MOI will always be wrong when guessing it based upon what you've said. More likely I could give some semblance of an "intelligent" answer if I could SEE your hands & feet, TOUCH your hands & feet, MEASURE the temperature of your hands & feet, etc. Were you in the audience per chance of the Ed Sullivan Show Feb. 1964 when the Beatles sang, "I wanna Hold your Hands & Feet?"