Scientists have discovered what may be an important new risk factor for heart disease. And here's the surprising twist: The troublesome substance seems to be a waste product left behind by bacteria in our guts as they help us digest lecithin — a substance plentiful in red meat, eggs, liver and certain other foods.
Doctors say the research further illustrates the complicated relationship we have with the microbes living inside us, and could lead to new ways to prevent heart attacks and strokes.
On Wednesday, the U.S. Supreme Court heard oral arguments in the final cases of the term, which began last October and is expected to end in late June after high-profile rulings on gay marriage, affirmative action and the Voting Rights Act.
Audio from Wednesday's arguments will be available at week's end at the court's website, but that's a relatively new development at an institution that has historically been somewhat shuttered from public view.
In the days since the Boston Marathon bombings, local law enforcement officials have been given high marks for their response to the attack and the coordination among numerous federal, state and local agencies involved.
But at the same time, questions are being raised about the coordination among federal agencies handling intelligence they had about the suspects in the months before the attack.