Mayo Clinic specialists answer health questions from readers like you.

• Gallbladder cleanse: A 'natural' treatment for gallstones?
• Gallbladder polyps: Can they be cancerous?
• Gangrene
• Gastric bypass surgery: Can it be redone if you regain weight?
• Gaucher's disease
• Genital herpes: Can you get it from a toilet seat?
• GERD: Certain medications can increase severity
• Getting a 'base tan': Does it help prevent sunburn?
• Glaucoma: Can allergy medications make it worse?
• Glucosamine and chondroitin: Do they affect gout?
• Glucosamine supplements: Can they rebuild cartilage?
• Glucosamine: Does it affect blood sugar?
• Glycemic-index diet: A helpful tool for people with diabetes?
• Glyconutrients: Are they important for good health?
• Goji juice: Can it prevent or treat cancer?
• Gout diet: Reducing purines may improve symptoms
• Gout: A risk factor for heart disease?
• Granuloma: What is it?
• Grape juice: Same heart benefits as wine?
• Grapefruit juice and drug interactions
• Graves' dermopathy: What causes it?
• Gray hair in child
• Gray hair: What causes it?
• Green potatoes: Are they OK to eat?
• Grieving process: What's normal?
• Gum: Is it good for your teeth?