Cassia Seed Tea: A Traditional Remedy for Eye and Liver Health with Modern Appeal

[medi K / HEALTH IN NEWS] Cassia seed tea, derived from the seeds of the Cassia obtusifolia plant, has long been cherished in traditional Korean medicine for its purported benefits to eye and liver health. In recent years, it has gained renewed attention as a soothing remedy for eye strain, particularly among those who spend long hours in front of digital screens—a common feature of modern life, including South Korea’s prevalent 9 a.m. to 6 p.m. office culture, where extended computer use is standard. However, while cassia seed tea offers a range of health benefits, it is not universally suitable, and certain groups should exercise caution or consult a healthcare professional before consuming it.



Benefits for Eye Health

Cassia seeds are rich in beta-carotene and vitamin A, compounds known to alleviate eye fatigue and support vision health. Regular consumption may help reduce the risk of conditions such as night blindness, cataracts, and glaucoma. This makes the tea particularly appealing for individuals who frequently use digital devices, as prolonged screen time can strain the eyes and contribute to discomfort.

Support for Cardiovascular Health and Blood Pressure Regulation

The active compounds in cassia seeds, including luprofrosin, are believed to aid in clearing waste from blood vessels and improving circulation. The tea may also help lower levels of low-density lipoprotein (LDL) cholesterol, often referred to as “bad cholesterol,” potentially reducing the risk of hypertension and atherosclerosis. These cardiovascular benefits make it a popular choice for those seeking natural ways to support heart health.

Liver Function and Detoxification

Cassia seed tea is traditionally valued for its ability to enhance liver detoxification and reduce fat accumulation, which may help prevent fatty liver disease. It is also noted for its mild effectiveness in alleviating hangovers after alcohol consumption. Historical texts, such as the Donguibogam, a foundational Korean medical compendium, highlight cassia seeds as a beneficial herb for liver health.

Digestive Health and Constipation Relief

The dietary fiber and anthraquinone compounds in cassia seeds promote intestinal motility, making the tea an effective remedy for constipation. Additionally, its diuretic properties may help reduce edema, or fluid retention, offering relief for those experiencing bloating or swelling.



Antioxidant and Anti-Inflammatory Effects

Cassia seeds contain antioxidants that combat free radical production, supporting immune function and slowing the aging process. Some reports suggest that rinsing the mouth with strongly brewed cassia seed tea may help alleviate oral inflammation, adding to its anti-inflammatory credentials.

Precautions for Safe Consumption

While cassia seed tea offers numerous health benefits, it is not suitable for everyone, and its consumption should be tailored to individual health conditions. The tea’s ability to stimulate bowel movements can lead to diarrhea, abdominal pain, or dehydration if consumed excessively, particularly for those with sensitive digestive systems or a tendency toward loose stools.

Individuals with low blood pressure should be cautious, as cassia seeds may further lower blood pressure, potentially causing dizziness or fatigue. Conversely, those with hypertension may find the tea beneficial, but combining it with antihypertensive medications could result in excessive blood pressure reduction, necessitating medical consultation.

People with diabetes should also exercise caution, as cassia seeds may lower blood glucose levels. When combined with diabetes medications, this could increase the risk of hypoglycemia. Similarly, individuals with liver conditions or those taking medications that affect liver function should consult a healthcare provider, as responses to cassia seed tea can vary.

The oxalic acid in cassia seeds may exacerbate kidney stones, making the tea unsuitable for those with kidney disease. Pregnant or breastfeeding women should avoid it due to reports suggesting it may induce uterine contractions, posing potential risks.

Recommended Preparation and Dosage

To prepare cassia seed tea, combine approximately 20 grams of cassia seeds with 600 milliliters to 2 liters of water, lightly roast the seeds, and simmer over low heat. This method is both common and safe.

For most individuals, a daily intake of two to three cups is recommended. Those new to the tea should start with a small amount to monitor their body’s response. Long-term users are advised to take periodic breaks to avoid potential side effects. Consuming the tea after meals or in the afternoon is ideal, as drinking it on an empty stomach may cause gastrointestinal discomfort, such as heartburn.

By understanding both its benefits and precautions, cassia seed tea can be a valuable addition to a wellness routine, particularly for those seeking natural support for eye, liver, and cardiovascular health. However, consulting a healthcare professional is essential for those with pre-existing conditions or concerns.

Oh Ha Eun / press@themedik.kr

Copyright © 2020 mediK. All rights reserved.