Reporter

Leif Greiss

Leif Greiss covers hospitals, health networks and public health in the Lehigh Valley for The Morning Call. Born and raised in Berks County, he returned to southeast Pennsylvania after spending two years covering the city of Bristol, Tennessee for the Bristol Herald Courier. As a Penn State student, he was a staff reporter for the Daily Collegian.

Seasonal affective disorder, most common during the winter, can also happen in the summer, doctors say. (Dreamstine/TNS)

It’s not just the winter blues. Seasonal affective disorder can hit in the summer, too

August 16, 2025 at 6:21 a.m.

It's not just the winter blues. Seasonal affective disorder can hit in the summer, too, doctors say.

To avoid avian flu, the FDA advises keeping cats indoors. (Tracy Glantz/The Island Packet/TNS)

Bird flu has been found in cats. What to know and how to protect them.

January 10, 2025 at 12:30 p.m.

Bird flu has been found in cats, and is often fatal. Here are some tips to protect your felines.

Scott Hartman strikes the ball while paying Pickleball Wednesday, July 20, 2022, at Grange Park in Upper Macungie Township. (Joseph Scheller/The Morning Call)

Injuries among pickleball players are becoming more common. Here’s how you can avoid injury and stay in the game

January 18, 2024 at 1:38 p.m.

Started playing pickleball? Injuries are common with the sport. Here's why, and how to avoid them.

REDUCE FOOD WASTE | In the United States, food waste accounts for between 30% and 40% of the food supply. By reducing waste at home, you help conserve energy, save money and support your local community. Start the new year by conducting a day- or week-long food waste audit. Track how much of your food ends up in the trash and why. Then look to implement food waste reducing tips in your day to day.

Is your 2024 resolution to waste less food? Here are some tips from dieticians

January 4, 2024 at 1:09 p.m.

About 80 million tons of food, or the equivalent of about 149 billion meals, are wasted each year in the United States.

Pink eye, or conjunctivitis, one of the most common winter health conditions, is also one of the most contagious when caused by a virus or bacterium. Symptoms include itchy, watery eyes, crusting of eyelids, and redness in the whites of the eye.

Had pink eye recently? There’s a chance it could have been from new COVID-19 strain

May 8, 2023 at 12:06 p.m.

Arcturus is believed to be the most infectious strain of COVID yet.

Lead abatement trainees work to seal a room with plastic sheeting Thursday, Feb. 9, 2023, during a lead abatement training session at Bucky Boyle Recreation Center in Allentown. (Rick Kintzel/The Morning Call)

Think you have lead paint in your home? Here’s what to do — and not do

March 13, 2023 at 3:38 p.m.

Though there are things homeowners can do to make their houses safer, lead abatement is not a do-it-yourself project.

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