ScienceInsights

Severe dehydration goes beyond thirst. Learn the warning signs in adults, children, and older adults, and when it's time to seek medical care.

Chronic fatigue syndrome goes far beyond tiredness. Learn what it actually feels like to live with CFS, from post-exertional crashes to brain fog and more.

ACL surgery itself takes about an hour, but your total hospital time and recovery stretch much longer. Here's what to realistically expect.

A clear guide to the nervous system's main parts, from the brain and spinal cord to the cells and chemicals that keep it all running.

Anorexia has one of the highest mortality rates of any mental illness. Here's what the data says about causes of death, risk factors, and long-term outcomes.

Learn how to introduce formula to a breastfed baby, from choosing the right type to easing digestion changes and making the switch go smoothly.

Learn the education, certification, and licensing steps involved in becoming a homeopathic practitioner in the US and Canada.

Learn what blood glucose numbers actually mean, from fasting levels to A1C, and how to know if your readings fall within a healthy range.

Sinus headaches cause pressure and pain around your cheeks, forehead, and eyes — but what you're feeling might actually be a migraine.

Skipping iodized salt? Seafood, dairy, and eggs can cover your iodine needs, but some foods may work against you. Here's what to eat and what to watch out for.