Mayo Clinic specialists answer health questions from readers like you.

• Baby brain: Does it exist?
• Baby Einstein DVDs: Good for infant development?
• Baby fat: When is it cause for concern?
• Baby poop: What's normal?
• Baby sign language: A good idea?
• Baby sling: Is it safe?
• Baby sunscreen: What's recommended?
• Baby teeth: When do children start losing them?
• Baby walkers: Are they safe?
• Baby's sex: Can parents choose?
• Back labor: Childbirth myth or reality?
• Back pain relief: Ergonomic chair or fitness ball?
• Bacterial vs. viral infections: How do they differ?
• Bad breath: Could a tongue scraper help?
• Barefoot running shoes: Better than traditional running shoes?
• Barrel chest: What causes it?
• Bellamine for hot flashes: An effective nonhormonal treatment?
• Bell's palsy: Will local anesthetic worsen it?
• Belly-dancing: A good exercise for weight loss?
• Benefits of being bilingual: Delay Alzheimer's?
• Beta blockers: Are they safe if you have asthma?
• Beta blockers: Do they cause weight gain?
• Beta blockers: How do they affect exercise?
• Bezoars: What foods can cause this digestive problem?
• Bioidentical hormones: Are they safer?
• Bipolar disorder and alcoholism: Are they related?
• Bipolar disorder in children: Is it possible?
• Bipolar disorder treatment: A cause of hypothyroidism?
• Bipolar disorder treatment: What role do antidepressants play?
• Bipolar disorder: Coping with a loved one's mental illness
• Bipolar medications and weight gain
• Bipolar treatment: Are bipolar I and bipolar II treated differently?
• Bird flu: Can you get it from eating chicken?
• Birth control pills for acne?
• Birth control pills: Harmful in early pregnancy?
• Birth control pills: OK to take indefinitely?
• Birth control: Can pre-ejaculation fluid cause pregnancy?
• Bitter orange weight-loss supplements: Do they work?
• Black, hairy tongue
• Bladder infection in men: What are the symptoms?
• Bladder outlet obstruction: Causes in men?
• Bleeding after hysterectomy: What's normal?
• Bleeding after menopause: Is it normal?
• Bleeding ulcer: What are the symptoms?
• Blighted ovum: What causes it?
• Blocked tear duct: What causes it?
• Blood clots during menstruation: A concern?
• Blood glucose monitors: What factors affect accuracy?
• Blood in urine
• Blood poisoning: When to see a doctor
• Blood pressure cuff: Does size matter?
• Blood pressure medication: Still necessary if I lose weight?
• Blood pressure medications: Can they raise my triglycerides?
• Blood pressure readings: Why higher at home?
• Blood pressure: Can it be higher in one arm?
• Blood pressure: Does it have a daily pattern?
• Blood pressure: Is it affected by cold weather?
• Blood sugar and mood: Any connection?
• Blood thinners: Can I still get blood clots?
• BMI: Is it accurate for weightlifters?
• Body fat analyzers: How accurate are they?
• Body fat: What happens to lost fat?
• Body shape: Does it increase your risk of diabetes?
• Bone bruise: How long before it heals?
• Bone cyst
• Botox injections: Can they relieve arthritis pain?
• Bottled water and cavities: Is there a link?
• Bow hunter's stroke: What causes it?
• Bowen therapy: Effective for back pain?
• Boy or girl: Can you choose naturally?
• Breakfast: How does it help weight control?
• Breast calcifications: Are they breast cancer?
• Breast cancer radiation: Can it cause dry skin?
• Breast cancer surgery: Does menstrual timing affect prognosis?
• Breast cancer treatment: Do I need chemotherapy?
• Breast cysts: What role does caffeine play?
• Breast implants and cancer: Any connection?
• Breast implants: Do they interfere with mammograms?
• Breast lift vs. breast augmentation: What's the difference?
• Breast rash: Could it be inflammatory breast cancer?
• Breast thermography: Can it detect breast cancer?
• Breast-feeding and alcohol: Is it OK to drink?
• Breast-feeding strike: Why do babies refuse to nurse?
• Breast-feeding while pregnant: Is it safe?
• Broken collarbone: How is it treated?
• Broken ribs
• Bronchial thermoplasty: A new asthma treatment?
• Bronchiectasis
• Bronchiolitis obliterans with organizing pneumonia (BOOP)
• Brugada syndrome: What are the signs and symptoms?
• Bump on the head: When is it a serious head injury?
• Burning feet: Causes and treatments?
• Butter vs. margarine: Which is better for my heart?
• Buying a treadmill: What should I look for?
• Buying beef? A guide to choosing the leanest cuts
• Byetta, Victoza, Bydureon: Diabetes drugs and weight loss