A sluggish liver is often responsible for an imbalance of hormones, since this organ is responsible for the breakdown and detoxification of hormones. Keeping the liver cleansed is very important. It is normal to feel a lack of energy, or to be tired or drowsy at times. A person may even act sluggish, listless, or uninterested. When lethargy continues, it may be a sign of a more serious problem.
Depression is the most common cause of persistent lethargy.
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