FIVE THINGS ABOUT HEALTH TODAY

1 TEXT AWAY, TEENS!

Prof. Russell Foster of Oxford University’s Sleep and Circadian Neuroscience Institute said the light from a cellphone is too weak to affect sleeping patterns. Research has previously said the phones’ blue light delays the body’s production of the sleep hormone melatonin. But Foster says the circadian rhythm is only disrupted when exposed to a large volume over a significant period of time.

2 STEP AWAY FROM THE SANITIZER

Health workers who use hand sanitizer between patients may be more likely to spread flu germs than those who wash their hands. That’s because fresh mucus from infected patients interferes with the ability of the alcohol in hand sanitizer to reach the concentrations needed to deactivate the flu virus.

3 ARGENTINA CRISIS DEFLATES CONDOM SALES

Lovers in romantic Argentina are cutting back on one important cost: contraception. Amid recession, currency devaluation and inflation, sales of condoms and birth control pills have tumbled.

4 LATE FRIDAY NIGHT LIGHTS

School officials in Michigan pushed kickoff times of Friday night high school football games to avoid peak mosquito-activity, after a rash of new cases of a sometimes-fatal disease communicated by the bugs. Three people have died of Eastern equine encephalitis in the state this year, with four more people infected.

5 ‘SILENT’ CELIAC DISEASE COMMON WITHIN FAMILIES

A new study suggests first-degree relatives of those with celiac disease frequently have the condition, too — often without typical symptoms. Undetected celiac disease can cause nutritional deficiencies, anemia, osteoporosis and even lymphoma.