Coffee Doesn’t Affect Psoriasis Risk After All, Researchers Say

FRIDAY, March 23 (HealthDay News) — Although earlier studies had
linked coffee to an increased risk for psoriasis, a large new study finds
no such evidence.

Psoriasis is a common skin condition that causes skin redness and
irritation. Most people with psoriasis have areas of thick, red skin with
flaky, silver-white patches called scales.

“Our hypothesis was whether caffeine would lower the risk of psoriasis
because there are hypotheses in the past that caffeine might be an
anti-inflammatory,” said lead author Dr. Abrar Qureshi, an assistant
professor of dermatology at Harvard Medical School in Boston.

“However, we found there was no association between coffee intake and
the risk of psoriasis,” he said.

These findings agree with other studies that found no association
between coffee and this skin condition, the researchers noted.

The reason that there has been an association of psoriasis with coffee
may have to do with smoking and alcohol, which are known risk factors for
psoriasis, Qureshi said. In the study, those who drank the most coffee
also drank the most alcohol and smoked, he said.

“There have been reports that coffee increases the risk of psoriasis
and that coffee helps quell psoriasis,” he said. However, this study found
no risk or benefit from coffee, Qureshi added.

The report was published in the March issue of the Archives of
Dermatology
.

For the study, Qureshi’s team collected data on almost 83,000 women who
took part in the Nurses’ Health Study. In this large population, the
researchers found no link between coffee or caffeine and developing
psoriasis.

Dr. Doris Day, a dermatologist at Lenox Hill Hospital in New York City,
said that this finding “makes perfect sense; it’s what I would have
suspected.”

The real risk factor may be smoking, she said. “Smoking is toxic to
every organ system and is especially toxic to the skin.”

However, Day said that caffeine can be soothing to the skin and it is
an ingredient in many skincare products, but it is not used for psoriasis,
she said.

More information

For more about psoriasis, visit the National Psoriasis Foundation.

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