Black cats are much more likely than lighter colored cats to trigger allergic reactions, although researchers are not sure why.

Way Healthier Air Purifiers duplicate Nature's own methods by creating ultraviolet lightrays and hydroxyl radicals to oxidize organic odors, germs and fungi -- the most effective and safe method to clean and revitalize your indoor air. Way Healthier uses exclusive technology you won't find in any other air purifier to: Eliminate Allergens So You Can Breathe Easier Destroy ALL Unwanted Pollutants Sanitize Surfaces and The Air You Breathe Energy Efficient for Round the Clock Use Save You Money -- No Filters To Replace! Truly Silent Operation Purify Even a Large Room Easily (up to 750 square feet!) Learn More About Way Healthier Air Purifiers

Researchers studied 321 patients with allergies and found that dark-colored cats were four times more likely to trigger symptoms such as sneezing, wheezing and overall misery than light-colored cats.

Compared to non-cat owners, people who let their dark cats into the bedroom were nearly 20 times more likely to have moderate or severe allergy symptoms.

Keeping the cat out of the bedroom should be a priority for allergy sufferers, study author Dr. Shahzad Hussain of Long Island College Hospital in New York told Reuters Health.

Although researchers did not measure the levels of potential allergens in the different colored cats, they do plan on measuring these levels in a follow-up study.

Annals of Allergy, Asthma and Immunology (publication pending)