What Is Cortisol?
Cortisol is the body's main stress hormone, but it does far more than respond to pressure - it helps regulate energy, blood sugar, sleep…
Dr. Nadia Okoro
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What Is Caffeine and What Are Its Effects?
Caffeine is a natural stimulant found in coffee, tea, cola and energy drinks that makes us feel more alert. Here is how it works, what it…
Dr. Nadia Okoro
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What Is Iron Deficiency?
Iron deficiency is when your body lacks enough iron to make healthy red blood cells, and it is one of the most common nutritional…
Dr. Nadia Okoro
434 reading now
What Is Vitamin B12?
Vitamin B12 is an essential nutrient your body needs for healthy blood, nerves and energy, found mainly in animal foods. Here is what it…
Dr. Nadia Okoro
389 reading now
What Is Dehydration?
Dehydration is when your body loses more fluid than it takes in, leaving it short of the water it needs to work properly. Here are the…
Dr. Nadia Okoro
457 reading now
What Is a Tension Headache?
A tension-type headache is the most common kind of headache, usually felt as a dull, tight band of pressure around the head. Here is what…
Dr. Nadia Okoro
424 reading now
What Is Sleep Debt?
Sleep debt is the accumulated shortfall between the sleep you need and the sleep you actually get. Here is how it builds up, what it does…
Dr. Nadia Okoro
410 reading now
What Is Inflammation?
Inflammation is the body's natural response to injury and infection, and a vital part of healing. Here is the difference between helpful…
Dr. Nadia Okoro
413 reading now
What Are Micronutrients?
Micronutrients are the vitamins and minerals your body needs in small amounts to work properly. Here is what they do, which ones matter…
Dr. Nadia Okoro
412 reading now