If you need caffeine to get you through the day, you're not alone. About 83% of Americans in 2013 said they drank coffee, according to the National Coffee Association. Add the other sources of caffeine -- cola, energy drinks, and some medications and supplements -- and the number of caffeine consumers is even greater. So is this a bad thing? Studies show caffeine can improve memory, decrease fatigue, and improve mental functioning. But there is a dark side to caffeine. Studies also show too much caffeine can set you up for high blood pressure, high blood sugar, and lower bone density -- not to mention jangled nerves. Follow the links below to find WebMD's comprehensive coverage about caffeine, the pros and cons, hidden dangers, and much more.
How Caffeine May Help (and Cause) Headaches
Does caffeine cause or cure a headache? Learn about the role caffeine plays both in treating and triggering certain types of headaches.
Questions to Ask Your Doctor About Breastfeeding
WebMD's list of questions to ask your doctor about breastfeeding.
Drug and Alcohol Related Sleep Disorders
WebMD looks at how the use of drugs -- illegal and legal -- and alcohol can lead to sleep problems.
Preventing Sleep Problems
WebMD looks at ways to prevent and solve sleep problems.
How to Drink Coffee
Coffee's caffeine jolt can temporarily boost alertness, perk up performance, and possibly even improve concentration. But caffeine is a drug, and as with any drug, there are right ways and wrong ways to use it.
Giving Coffee a Break
If it weren't for the coffee,' David Letterman once quipped, 'I'd have no identifiable personality whatsoever.' That's a sentiment most java lovers can understand.
Are you confusing a coffee buzz with a panic attack? A surprising look at some anxiety disorders.
Coffee Health Benefits: Research on Type 2 Diabetes, Cancer, Stroke, and More
WebMD discusses the health benefits of coffee and possible risks for those with certain conditions.
Trigger Foods to Avoid with Irritable Bowel Syndrome (IBS)
Though everyone's IBS is different, most sufferers have certain trigger foods in common. WebMD Dietitian, Elaine Magee, discusses which foods to avoid and which foods can help your Irritable Bowel Syndrome.
The Truth About Coffee
Can the secret of good health be found in a cup of joe? Not completely, but research is showing it's a good start.
Caf-Nap: New Napping Idea for Coffee Lovers
Sleep specialist, Michael Breus, PhD, recommends a cup of joe before a cat nap for some people.
Is Caffeine Causing Your Insomnia?
Do you know your caffeine intake? Too much can lead to sleep problems.
Slideshows & Images
Can't Sleep? It Could Be What You're Eating
Could a good night’s sleep come down to your diet? Discover which foods hinder sleep and which foods promote restful slumber.
Will This Give Me Heartburn?
See which foods may help or worsen symptoms and how other habits may affect heartburn.
20 Tips to Reduce Your Sleep Problems
Can't sleep? Start using the tips from this WebMD slideshow tonight to sleep better.
How to Help Headache Pain
Suffer from tension headaches? See how you can use relaxation techniques, medication, and other methods to fight the pain.
Avoid Weight Gain: Watch What You Drink
Here's how to keep from drowning in liquid calories.
Fabulous, Low-Fat Frozen Drinks
Chill out with these lower-cal concoctions
Healthier Ways to Get Your Caffeine
The best ways to get your boost
The Buzz on Coffee
The latest research shows your morning pick-me-up may be brimming with health benefits.