Former Coronation Street star Lisa George has offered a health update from her hospital bed. The Beth Tinker actor said she had to "push and push" for doctors to treat her after suffering from low iron levels.Low iron levels can cause sufferers to experience persistent fatigue and weakness, light-headedness, dizziness, headaches, and heart palpitations.Taking to Instagram, Lisa shared a photo of herself on a drip, writing: "Finally having the first of my iron infusions.