When we think about heart health, many of us are familiar with the idea of "hardening" arteries or the buildup of calcium in the blood vessels. But there's another, more dangerous culprit lurking within your arteries that often goes unnoticed: soft plaque. Unlike its calcified counterpart, soft plaque can be more unpredictable and potentially life-threatening, even when you feel perfectly healthy.

Mercury is a toxic metal that can affect the brain, kidneys, and nervous system, and testing is important if you've had possible exposure through fish, workplace contact, or accidental spills. The right test depends on the type and timing of exposure.

In the startup world, sacrificing short-term comfort for performance has become a badge of honor. Among the first sacrifices is often sleep. While most of us understand how lack of sleep impacts short-term cognitive function—making it harder to focus and solve problems—few realize the deeper, long-term damage we may be doing to ourselves.