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Synthetic peptides, often taken by injection, are growing in popularity among patients seeking to optimize health and longevity. Yet FDA scientists point to a dearth of evidence supporting their use.

FDA scientists flag concerns with peptides, the trendy molecules RFK Jr. supports

Documents reviewing the research on peptides note lack of good evidence of efficacy or safety. Yet an FDA panel will consider easing access to them later this month.

People cool off at the fountain in Millennium Park in Chicago as temperatures topped 90 degrees on Monday. Forecasts predict extreme heat this week across the Midwest and East Coast.

It's going to be a hot July Fourth for much of the country

The National Weather Service has issued heat warnings and watches for much of the Midwest and East heading into the holiday weekend. In many places, the temperatures could shatter records.

Rep. Thomas Kean Jr., R-N.J., arrives at the U.S. Capitol with his wife Rhonda Kean on June 30.

Rep. Tom Kean returns to Congress, says depression is why he went missing for months

The New Jersey Republican was missing for months with no explanation for his constituents. He explained in a House floor speech that after his diagnosis, there was no timeline for recovery.