Calcium is critical for strong bones and teeth, and the body’s most abundant mineral may also help keep you well rested and healthy. Research shows that consuming calcium-rich foods or taking a calcium supplement before bed can help you fall asleep and sleep well.

Periodontal disease is a severe form of gingivitis or gum inflammation, according to the National Institute of Dental and Craniofacial Research. With periodontal disease, gums separate from the teeth, leaving an open space that can lead to infection.

Zinc, a trace element naturally found in foods such as nuts and beef, helps with numerous health functions, including immune system maintenance and wound healing.

There are two kinds of fungi -- molds and yeasts. Many fungi that can cause infections or disease can be molds at one temperature, but yeasts when they are inside of your tissue at body temperature. Tinea versicolor is a fungus that causes a fairly common skin disorder.

Magnesium is an essential mineral that serves multiple important functions in the body, including enzyme activation, energy production and bone mineralization.

Apple cider vinegar is a household staple used for cooking and even as a substitute, low-calorie salad dressing. What some people may not know is that apple cider vinegar can reduce swelling, according to Earl Mindell, M.D., and author of "Dr. Earl Mindell's Amazing Apple Cider Vinegar."

Synthroid is the brand name of levothyroxine, a synthetic thyroid hormone used primarily to treat irregular thyroid function, mainly in people with hypothyroidism and those who have had their thyroids removed.

Magnesium is one of the more diversely used minerals in your body. It plays a role in ion transport, which impacts your muscle function. Without enough magnesium in your body, you can suffer from symptoms that may include hand tremors.

Drinking milk helps you meet the recommended daily intake for calcium, phosphorus, potassium and vitamins A and D. You probably don't want to take your multivitamin with a glass of milk, however, because it will limit the amount of calcium and iron you absorb from your multivitamin.

Citric acid intolerance is a relatively rare condition. It is more than a sensitivity or allergy to citrus fruits; citric acid is naturally present in berries, cheese, pineapple, tomatoes and wine. It is also used for flavoring and as a preservative in canned fruits and vegetables, beverages and mayonnaise.

Many people experience an occasional eyelid twitch, a muscle spasm in the levator muscle that raises and lowers your eyelid. This condition may occur for a number of reasons, but it does not have a known connection to a high intake of vitamin D, a nutrient necessary for body functions and bone strength.

Many people suffer from jaw pain caused by problems with the temporomandibular joint, also known as TMJ, a joint located near your ear that allows your lower jaw to function.