Can lingzhi (Reishi mushroom) be steeped in water and consumed long-term?

Generally speaking, Reishi mushroom (Ganoderma lucidum) should not be consumed long-term by steeping in water. The detailed explanation is as follows:

Reishi mushroom is a precious traditional Chinese herb known for its various health benefits, including replenishing vital energy, calming the mind, relieving cough, alleviating asthma, and promoting longevity. However, due to its specific medicinal properties, long-term consumption might lead to imbalance of yin and yang in the body. For individuals with a predominantly "hot" constitution, prolonged use may exacerbate internal heat symptoms, causing dry mouth, bitter taste, oral ulcers, constipation, and other heat-related issues. Conversely, for those with a cold-deficient constitution, long-term consumption might lead to excessive nourishment, disrupting normal digestive functions and causing symptoms such as abdominal distension and loss of appetite.

Certain components in Reishi mushroom may irritate the gastrointestinal tract, especially for individuals with weak digestive systems. Long-term and excessive consumption of Reishi mushroom water may lead to gastrointestinal discomforts such as nausea, vomiting, abdominal pain, and diarrhea. Furthermore, individual body constitutions vary, and responses to Reishi mushroom may differ accordingly. People with weak constitutions or insufficient qi and blood may benefit moderately from drinking Reishi mushroom water under medical guidance.

However, individuals with a hot constitution prone to excessive internal heat, or those with excess heat or damp-heat in the body, may worsen their conditions by consuming Reishi mushroom water daily. It is recommended to consult a physician to determine whether long-term consumption is suitable. Before beginning long-term use, understanding your body condition and seeking professional medical advice is essential.