A low level of cortisol in the blood may be indicative of adrenal gland problems, such as tuberculosis infection of the adrenal glands or Addison’s disease, according to WebMD. Lower than usual levels of cortisol can als... More » Health Medical Ranges & Levels

Effects of low cortisol levels include fatigue, muscle weakness, poor appetite, weight loss and abdominal pain. Cortisol, an adrenal hormone that affects almost every cell and organ in the body, is responsible for helpin... More » Health Conditions & Diseases

Symptoms of cortisol deficiency include weight loss, muscle weakness, fatigue, low blood pressure and darkening of the skin. Cortisol deficiency symptoms often begin gradually. Many sufferers are unaware of the condition... More » Health Pain & Symptoms
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The causes of a low sodium level include dehydration, kidney problems, severe vomiting or diarrhea, hormonal changes and the use of certain medications, states Mayo Clinic. Low sodium levels are also caused by heart prob... More » Health Medical Ranges & Levels

Causes of a low ferritin level include chronic bleeding in the digestive tract, heavy menstrual bleeding, iron-deficiency anemia and problems absorbing iron, explains MedlinePlus. Ferritin is a protein that stores iron i... More »

A blood sugar level of 300 is considered too high and may lead to extreme thirst, increased appetite, weight loss or fatigue, according to WebMD. If blood sugar levels continue to increase above 350 milligrams per decili... More »

A low lipase level indicates that the pancreas is not producing enough of the enzyme lipase, states Healthline. According to the University of Maryland Medical Center, low lipase levels might be found in people with medi... More »