Hello, my girlfriend is having some issues. She is a heavy smoker. She has fatigue and dizziness. She often feels weak. She often takes her blood pressure and she has unusually low blood pressure. The worst thing is that she constantly has headaches. She is also vegan. I personally dont think she eats enough, and when she does it is usually not tje healthiest foods, frozen pizzas, taco bell, high sodium stuff. I m worried aboit her. She also doesnt drink a lot (fluids) i am helping her to quit smoking soon, but is smoking the main cause of these issues? She also has asthma.