ScienceInsights

Most Norwood 3 hair transplants need 1,500–2,500 grafts, but your hairline shape, donor supply, and density goals all affect the final count.

Trulicity and Wegovy are both weekly injectables, but they work differently and treat different conditions. Here's what sets them apart.

Finding the right physical therapist takes more than a quick search. Learn what credentials, specialties, and red flags to look for before booking.

5.8 inches is right around average, and research shows partners care far less about length than most men assume. Here's what the data actually says.

An 18 inch neck is above average and may raise health concerns like sleep apnea, but muscle versus fat makes a big difference.

Find out how many Hydro Flask refills you actually need each day, based on your bottle size and personal hydration needs.

999 Hz audio is popular for relaxation and focus, but what does the science actually say? Here's an honest look at the claims and real evidence.

Trace chemotherapy waste is a distinct category with its own handling rules. Here's what it includes, how it's identified, and why proper disposal matters.

Chicken gizzards do contain cholesterol, but here's what that actually means for your health and whether they can fit into a balanced diet.

Research shows most men fall within a similar size range. Here's what studies actually say about average penis length, girth, and why perception often differs from reality.