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Questions & Answers
We have answers to the most commonly asked questions.
Find your topic by the first letter.
- Hair dye and pregnancy: A concern?
- Hand swelling during exercise: A concern?
- Hangover prevention: Do lighter colored drinks help?
- HCG diet: Is it safe and effective?
- Head lice prevention: What works, what doesn't?
- Headaches during pregnancy: What's the best treatment?
- Healthy chocolate: Dream or reality?
- Healthy heart for life: Avoiding heart disease
- Heart attack prevention: Should I avoid secondhand smoke?
- Heart cancer: Is there such a thing?
- Heart disease prevention: Does oral health matter?
- Heart rate: What's normal?
- Heavy periods: Can folic acid help?
- Heel spurs: Do they always cause pain?
- Hemorrhoids during pregnancy: What's the best treatment?
- Hepatitis C: How common is sexual transmission?
- Hepatitis C: What happens in end-stage liver disease?
- HER2-positive breast cancer: What is it?
- Herbal treatment for anxiety: Is it effective?
- Hernia exam: Why do I have to cough?
- Hernia truss: Can it help an inguinal hernia?
- Herniated disk vs. bulging disk: What's the difference?
- High blood pressure and cold remedies: Which are safe?
- High cholesterol in children: How is it treated?
- High cholesterol treatment: Does cinnamon lower cholesterol?
- High-dose vitamin C: Can it kill cancer cells?
- High-frequency hearing loss: Can hearing aids help?
- High-fructose corn syrup: Any health concerns?
- High-protein diets: Are they safe?
- Hip resurfacing: An alternative to conventional hip replacement?
- Hodgkin's vs. non-Hodgkin's lymphoma
- Honey: An effective cough remedy?
- Hoodia: Does this dietary supplement help weight loss?
- Hookah smoking: Is it safer than cigarettes?
- Hormone replacement therapy: Cause of vaginal bleeding?
- How is brown fat different from other fat?
- How many hours of sleep are enough?
- HPV infection: A cause of cancer in men?
- HPV infection: How does it cause cervical cancer?
- Huperzine A: Can it treat Alzheimer's?
- Hydrated skin: Does drinking water help?
- Hygiene hypothesis: Early germ exposure prevents asthma?
- Hyperbaric oxygen therapy: Can it reduce stroke damage?
- Hyperextended knee: Cause of serious injury?
- Hyperinflated lungs: What does it mean?
- Hyperinsulinemia: Is it diabetes?
- Hypertensive crisis: What are the symptoms?
- Hypnobirthing: How does it work?
- Hypothyroidism and infertility: Any connection?
- Hypothyroidism diet: Can certain foods increase thyroid function?
- Hypothyroidism symptoms: Can hypothyroidism cause eye problems?
- Hypothyroidism: Can calcium supplements interfere with treatment?
- Hypothyroidism: Can it cause peripheral neuropathy?
- Hypothyroidism: Does it cause joint pain?
- Hypothyroidism: Should I take iodine supplements?
©1998-2014 Mayo Foundation for Medical Education and Research (MFMER).