Mucus is a thick, slippery substance secreted by glands and cells in your body. While mucus is naturally present in your body and helps protect your respiratory system, excessive mucus production can cause throat discomfort, nasal congestion and, in severe cases, breathing difficulty.

Reactive hypoglycemia is low blood sugar that occurs 3 to 4 hours after eating a meal. Symptoms include hunger, weakness, shakiness, lightheadedness, anxiety and confusion, according to MayoClinic.com. Reactive hypoglycemia requires a medical evaluation for a diagnosis.

Your gallbladder is a small organ located under the liver. The gallbladder stores bile produced by the liver to aid in the digestion of fats. If you have gallbladder problems, you should avoid foods with high fat so your gallbladder does not have to work as hard.

Tendons and ligaments are key structures in your body. Tendons connect muscles to bones, while ligaments attach bones to other bones and your joints. These tissues are what enables you to stand up, move at the joints and perform pretty much any physical action with your body.

Headache, dry mouth, drowsiness and nausea -- the effects of a hangover can make you wish you hadn't enjoyed that cocktail in the first place. Hangover cures are generally a myth; the best treatment for a hangover is prevention.

The term sciatica refers to pain that radiates along the path of your sciatic nerve, which involves your back, buttocks and legs. Potential causes, according to the University of Maryland Medical Center, include a slipped disk, tumors, a painful disorder called piriformis, pelvic injuries and degenerative disk disease.

G6PD deficiency occurs when your body does not produce adequate amounts of glucose-6-phosphate dehydrogenase, an enzyme that assists proper red blood cell function. This inherited condition affects about 400 million people worldwide, according to the Deployment Health and Family Readiness Library.

“Eat your liver, it’s good for you,” may be the understatement of all time. In 1934, three physicians won the Nobel Prize in Physiology or Medicine for discovering that liver successfully treated pernicious anemia. This highlights the nutritional value available through one serving of beef liver.

Nosebleeds, also called epistaxis, have a variety of causes and occur more often in children under the age of 16. In most cases, nosebleeds are caused by minor trauma and stop bleeding within minutes, especially if ice is applied or the bridge of the nose is pinched.

The kidneys and liver are organs of detoxification and elimination that help your body filter waste. The kidneys regulate sodium and mineral levels, excreting extra salts so that toxins do not build up in your body.

Ligaments connect bone to bone and tendons connect muscle to bone. The function of these connectors is important for everyday activities and movements. But active people are prone to ligament and tendon damage due to the stresses of physical activity, especially repetitive motions.

As with medications, taking high doses of certain vitamins can put stress on the liver and even cause in liver damage. Some vitamins, such as B-3, are especially hard on the liver, such that your physician may recommend periodic liver function tests during vitamin therapy.