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By Alan Mozes
HealthDay Reporter
WEDNESDAY, Oct. 17, 2018 (HealthDay News) – Contrary to popular belief, new research suggests that coffee consumption may be a good solution to avoid unsightly skin called rosacea.
The discovery is based on an analysis of the risk of rosacea and dietary habits of nearly 83,000 women enrolled in a national study conducted by nurses between 1991 and 2005.
And it seems to challenge the long-standing wisdom that those who fight rosacea must avoid both caffeine and hot beverages of all kinds.
"In our study, we found that caffeine consumption from coffee could protect against the risk of developing rosacea," said study author, Wen-Qing Li.
But the study did not prove that coffee lowers the risk of rosacea.
Li is an Assistant Professor of Dermatology and Epidemiology at Brown University of Providence, R.I.
Rosacea is a common chronic inflammatory condition that affects the face in the form of flushing and redness, and sometimes acne-like lumps. Former President Bill Clinton is struggling with this disease, while Princess Diana also has rosacea.
On how much caffeine would be needed to reduce the risk of rosacea, Li said that coffee drinkers who consumed as little as 100 milligrams (mg) of caffeine a day saw a 4% reduction in the risk of rosacea.
In addition, researchers found a "significant" drop in the risk of rosacea compared with those consuming less than one cup per month.
But calculating the size of a portion can be tricky. The Mayo Clinic notes that an 8-ounce cup of coffee usually contains between 95mg and 165mg of caffeine, while the research team says that one should drink at least two servings of coffee per day to reach the 100 mg threshold.
On the other hand, the Center for Science in the Public Interest points out that a single portion "venti" of 20 ounces of Starbucks Blonde Roast coffee contains about 475 mg of caffeine, while a single "big" portion of 20 ounces of Dunkin & # 39; Donuts Coffee with Turbo Shot contains approximately 400 mg.
Continued
The other unresolved issue is to know exactly why caffeine could reduce the risk of rosacea in the first place.
Li said the jury was still not there, but he stressed the potential impact on the strength of vascular contractions and the immune system. Risk reduction, he added, could also come from the impact of caffeine on key hormone levels – such as epinephrine, norepinephrine and cortisol – or antioxidants that it contains.
Nevertheless, Li pointed out that the apparent association was only visible among coffee drinkers. No protection was related to the consumption of other substances containing caffeine, including tea, soda or chocolate. No protection benefit was related to the consumption of decaffeinated coffee.
In fact, the analysis suggested that chocolate consumption could actually increase the risk of rosacea, although Mr. Li pointed out that "the results can not exclude the potentially protective effect of the caffeine consumed under other forms ".
Prior to 2005, of the largest group of women in the study, about 5,000 were diagnosed with rosacea.
The research team then compared these rosacea diagnoses with detailed reports on food and beverages, prepared every four years since 1991.
The study was published October 17 in the journal JAMA Dermatology.
Dr. Robert Kirsner, director of the Department of Dermatology and Cutaneous Surgery at the Miller School of Medicine at the University of Miami, suggested that, if the results were "intriguing", they should be interpreted with caution, "being given that an association does not involve. "He was not involved in the research.
Nevertheless, Kirsner said the results could "help guide patients with regard to food choices" and could eventually lead to new coffee-based treatments.
Dr. Mary Wu Chang, Distinguished Clinical Professor of Dermatology and Pediatrics at the University of Connecticut's School of Medicine, agreed that the results are logical, even though they are "a bit startling".
But Chang, who played no part in the study, noted that the degree of benefit observed was "not that much, so I'm not sure what to conclude or recommend. , From this."
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