Dr. Peter McKenna

Humidity

While we have been fortunate this summer to have mild weather, the threat of heat, particularly humidity remains.  Humidity is perhaps the most important factor influencing our summer outdoor activities.  For example, an 88-degree day with 40% humidity feels like 88 degrees.  With 70 percent humidity, it feels like 100 degrees.  What humidity does is […]

Itching!

Itching or pruritus is a neurological stimulus similar to pain.  Your skin is alerting you to a “threat”.  It can be a direct stimulus (a leaf brushing against your skin), imagined (you see someone scratching), or by an internal stimulus (an allergy to something taken orally).  Like pain, the itching stimulus triggers a nerve that […]

Hand Washing!

A recent study found that over 3,700 bathroom users, one in 10 did not wash their hands at all, just two in three used soap, and only one in 20 washed for 15 seconds which is still 5 seconds SHORT of what is recommended.  This may explain some of the cause of 50 million food-borne […]

Eggs!

Eggs are inexpensive, protein packed, and relatively low in cholesterol.  There is 186 mg of cholesterol in the average egg. It is contained in the yolk.  The American Heart Association recommends 300 mg of cholesterol or less each day.  For those with normal cholesterol four eggs or less per week are acceptable.  Anyone with high […]

What Happens in about 1 in 600 Flights?

The answer is an onboard medical emergency that sometimes requires an unscheduled landing.  A recent New England Journal of Medicine study looked at about 12,000 inflight emergencies over a three year period.  Pregnancy complications, psychiatric episodes, and cardiac arrest were relatively rare.  More common were fainting, difficulty breathing, stomach problems and cardiac symptoms. The research […]

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