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an out-of-focus close-up of the inside of a very full and disorganized refrigeratorFood poisoning: How long can you safely keep leftovers?
Food poisoning, also called foodborne illness, is caused by harmful organisms, such as bacteria, in contaminated food. Because bacteria typically don't change the taste, smell or look of food, you can't tell whether a food is dangerous to eat. Learn more about handling leftovers safely from Katherine Zeratsky, a Mayo Clinic registered dietitian.


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Seasonal affective disorder treatment: Choosing a light box
For some people, fall and winter may bring on seasonal affective disorder, a type of depression. Use of light therapy boxes, also known as light boxes, bright light therapy boxes and phototherapy boxes, can offer relief. All light therapy boxes for treatment of seasonal affective disorder are designed do the same thing, but one may work better for you than another. Here's what you need to know.

Poinsettia plants: Are they poisonous?
Poinsettia plants are less toxic than once believed. In most cases, unless there's an allergy, poinsettia exposure causes only discomfort. Learn more from Dr. Jay Hoecker, an emeritus Mayo Clinic pediatrician.

Motion sickness: First aid
Any type of transportation — ship, plane, train, automobile — can cause motion sickness. It can strike suddenly, progressing from a feeling of uneasiness to a cold sweat, dizziness and vomiting. There are some strategies you can use to avoid motion sickness or manage the effects, though. Learn more about what you can do to make your holiday travels more enjoyable.

At what age do children start losing their baby teeth?
A child's baby teeth usually stay in place until they are pushed out by permanent teeth, typically around age 6. If a child loses a baby tooth early as a result of tooth decay or an accident, a permanent tooth might drift into the empty space. This can crowd permanent teeth and cause them to come in crooked. Learn more about baby teeth from Dr. Thomas Salinas, a Mayo Clinic prosthodontist.

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