Anxiety disorders can wreak havoc on your life. You may feel afraid to leave the house, experience constant worry and stress, and feel irritable or frustrated with those around you or with yourself. While a number of treatments can offer relief, research has shown that L-arginine may also offer benefits.

Vitamin D is a fat-soluble nutrient that is produced by your body with exposure to natural sunlight. This vitamin plays an important role in the absorption of the mineral calcium, which creates the structure of your teeth and bones.

L-histidine is a conditionally essential amino acid, so-called because adults generally produce adequate amounts of the substance but children quite often do not and must fill their needs through diet. Both plant and animal proteins are good sources of this amino acid, which is a building block of protein in your body.

Municipalities in the United States have added fluoride to drinking water since 1945. In small amounts, this chemical can provide healthier teeth. However, in some circumstances, groundwater sources can contain too much fluoride. The water purification method of reverse osmosis can remove fluoride.

The good news is there is some truth to the idea that apple cider vinegar can help burn fat. The bad news is that vinegar, like many other so-called super foods, is no miracle worker. Either way, to get the most of vinegar's benefits, you'll need to have it before or during a meal, as opposed to after.

For most essential vitamins and minerals, a male's body requires more. But that's not the case with iron. A female, depending on her stage of life, needs to take in up to more than double the amount of iron a man needs. During pregnancy, iron intake should almost triple a man's.

Creatinine tests are commonly used by your doctor as a quick and easy way to check your kidney function. Creatine supplements are used by athletes and fitness enthusiasts to assist in muscle growth and increase short-term endurance. Creatine is naturally produced by your body and broken down into creatinine.

Magnesium plays a key role in your health, promoting bone health and muscle function, and it also helps regulate the amount of other minerals in your system. Too much or too little magnesium can cause adverse symptoms, including nausea.

Polycystic ovary syndrome, or PCOS, is a hormonal disorder in which the ovaries produce too many male hormones. These hormones can disrupt a woman's normal ovulation cycles and thereby cause infertility.

Iron combines with protein to make hemoglobin, the red component of blood that carries oxygen to body cells. It also helps cells use oxygen, prevents nutritional anemia and increases resistance to infection.

L-arginine and ginseng are supplements sometimes taken to improve athletic performance. L-arginine is an amino acid that helps promote vasolidation, or widening of your blood vessels for improved blood flow. This may help deliver vital nutrients to your muscles more efficiently for increased athletic performance.

Vitamin D, also sometimes called the “sunshine vitamin,” is essential for healthy bone production and growth, since it helps your body absorb more dietary calcium. Not having enough vitamin D in your system means you will absorb almost 50 percent less dietary calcium than you would otherwise.