Yes it could.
your clutch may not be fully engaging
Tire out of balance is the most common cause.
Warped brake rotors.
A bad rotor would not necessarily cause a bad vibration as it would most likely create a noise and wear your break pads down unevenly. It could be as simple as an unbalanced tire or a warped rim. Also if your tires are choppy then a vibration can become noticeable. Also a bad bearing or axle could cause vibration (however, it would be noticeable at a lower speed).
Yes, it sure can.
Doctors have a tendency to try a lot of different treatments. If he recommended whole body vibration exercises, it is most likely because he/she has seen positive results in the past.
it cant do that because no one can stop a vibration only the earth could
Vibration could cause it to jump as from a minor earthquake or washing machine.
Check the entire front end assembly. Wear in the tie rod ends, ball joints, or other components can cause the vibration.
Look up pulsating in lower abdomen at webmd.com