Catchy phrases, odd advice, old wives' tales -- people get their health tips and trics from a wide variety of sources. DukeHealth.org asked several Duke Medicine experts to help investigate these common health-related myths -- or are they facts?

Myth or Fact: Hot Dogs Cause Cancer
Are the rumors true that hot dogs can bite back by giving you cancer?

Myth or Fact: People with Light Eyes are More Sensitive to Sunlight
Is it all in your head or if there is any truth to the rumor that people with light eyes are more sensitive to sunlight?

Myth or Fact: Eating Chocolate Causes Acne
Generations of teenagers have been cautioned that chocolate causes acne, but is there any truth behind the warning?

Myth or Fact: Crossing Your Legs Causes Varicose Veins
Whether to be polite or just for comfort, sitting with crossed legs is a common habit. Does this posture increase your chance of developing varicose veins?

Myth or Fact: Spending Many Hours in Front of a Computer Can Damage Your Eyes
Between work, school, games, and social networking, people spend huge chunks of their day staring at computer screens. Can this increased screen time be damaging your eyes beyond repair?

Myth or Fact: More Women Go Into Labor During a Full Moon
From high tides to bouts of insomnia to good luck, a full moon has been said to cause a wide range of things. Does the waxing moon also bring babies?

Myth or Fact: Spicy Foods Cause Women to Go Into Labor
Amy MacDonald, director of Duke Midwifery Services, explains what's behind this familiar pregnancy adage.

Myth or Fact: It Takes Seven Years to Digest Chewing Gum
What really happens to gum when you swallow it? Nancy McGreal, MD, shines a light on this sticky question.

Myth or Fact: Eating Carrots Improves Eyesight
The notion that eating carrots improves eyesight sounds like a story your mother made up to get you to eat your vegetables. But is there any truth to it?

Myth or Fact: Wait 30 Minutes After Eating to Go Swimming
Do you really have to wait 30 minutes after eating to go for a swim? Duke nutrition and fitness experts tackle this question.

Myth or Fact: Some People Can Eat Whatever They Want without Gaining Weight
Elisabetta Politi of Duke Diet & Fitness Center says the answer to this question may lie in the set-point theory.

Myth or Fact: Antibiotics Cure Colds
When sore throats and sniffles from a cold take a toll, many people’s first reaction is to ask a doctor for an antibiotic. But do antibiotics really counteract common colds and viruses?

Myth or Fact: Feed a Cold, Starve a Fever
Duke medical experts sound off on a well-known adage.