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Getting a tat could spark off an allergy

Tattoos may cause allergic reactions, and tattoo needles, even clear ones, could also be partly responsible, a brand new research discovered.

Earlier research have proven that tattoo inks include excessive quantities of nickel, chromium, cobalt and mercury, that are transported to the lymph nodes and might trigger allergic reactions. However now researchers have discovered that an extra supply of steel is the needles themselves.

Scientists analyzed 12 metal tattoo needles and located that each one contained chromium and nickel. They appeared on the needles with an electron microscope earlier than and after they have been used. After a tattooing session, the needles have been abraded, with microscopic bits of nickel and chromium worn off. The report is in Particle and Fibre Toxicology.

The issue, they found, was titanium dioxide, a chemical used to brighten the colours of tattoo inks. It’s this abrasive additive that erodes the needles. The abrasion doesn’t happen when black ink alone is used.

“We can’t quantify the chance that comes with these particles,” mentioned the report’s lead creator, Ines Schreiver of the German Federal Institute for Threat Safety. “However on the whole, remember that there is likely to be dangers with tattooing, quite a lot of impurities that is likely to be allergenic or carcinogenic. Folks ought to be conscious and make knowledgeable choices about whether or not they wish to take the chance.”

— Nicholas Bakalar, The New York Instances

Teen legally blind after unbalanced 7-year diet

An excessive case of “fussy consuming” precipitated blindness in a teen from the UK, in accordance with the Annals of Inside Medication.

When Denize Atan, the research’s lead creator, met the 17-year-old boy at Bristol Eye Hospital, his eyesight had been deteriorating for 2 years. However what shocked her most was “how lengthy the affected person’s consuming behaviour had continued,” Atan mentioned — about seven years.

The teenager instructed medical doctors that since elementary college, “he had a each day portion of fries from the native fish and chip store and snacked on Pringles, white bread, processed ham slices, and sausage,” the research mentioned.

The dangers of poor diet are sometimes related to weight problems, poor cardiovascular well being and most cancers, however Atan’s research warns that it may well even have disastrous results on the nervous system, together with imaginative and prescient.

The youth’s analysis, in accordance with the report, was twofold: dietary optic neuropathy and avoidant-restrictive meals consumption dysfunction, an consuming dysfunction which generally begins in center childhood and is pushed by an aversion to sure meals textures.

“Dietary deficiencies are literally fairly widespread, however dietary blindness is just not,” Atan mentioned. “Blindness is an unusual however critical complication of poor diet.”

— Deanna Paul, The Washington Put up

Look on the brilliant aspect; you would possibly dwell longer

Those that see the glass as half full, in accordance with a brand new research, dwell longer.

Pessimists, in fact, may need suspected this all alongside — however now there’s precise analysis behind it.

Boston-area scientists discovered essentially the most optimistic folks dwell a median of 11 to 15 p.c longer than their extra pessimistic friends. Girls who’re optimists are additionally 50 p.c extra more likely to dwell a minimum of to age 85, whereas male optimists are 70 p.c extra more likely to dwell that lengthy, mentioned Lewina Lee, the lead researcher and a psychiatry professor at Boston College’ College of Medication.

“In earlier research, researchers have discovered that extra optimistic folks are inclined to have decrease threat of persistent ailments and untimely dying,” Lee mentioned. “Our research took it one step additional.”

Not a pure optimist? The mind-set is about 25 p.c hereditary, Lee mentioned, that means folks have some management over their stage of excellent ideas. She mentioned cognitive behavioral remedy and imagining a future wherein your objectives have been reached are examples of the way folks can turn out to be extra optimistic.

The findings have been within the journal Proceedings of the Nationwide Academy of Sciences. The researchers imagine optimists could also be higher at regulating stressors and bouncing again from upsetting occasions. Optimists additionally usually have more healthy habits, like exercising extra and smoking much less.

— Marisa Iati, The Washington Put up