Is celtuce the "blindness vegetable"? The truth explained once and for all

Is celtuce the "blindness vegetable"? Yes. A certain substance in celtuce has an irritating effect on the optic nerve. Ancient books record that eating too much lettuce causes blurred vision, and that stopping the food for a few days allows it to recover on its own. Therefore, people with weak eyesight should not eat much of it, and people with eye diseases, especially night blindness, should also eat little of it.

1. Who should not eat much celtuce?

1. Women during menstruation should not eat cold-dressed celtuce

Celtuce is cold in nature; women who eat it during menstruation may experience poor menstrual flow and irregular menstruation, worsening the symptoms of dysmenorrhea.

2. People with deficient cold of the spleen and stomach or a cold constitution should not eat much

Celtuce is a cold-natured food and also stimulates gastric juice secretion, so people with a deficient cold constitution or a poor spleen and stomach will feel even colder after eating it.

3. People with eye diseases should not eat much

Ancient books record that lettuce is toxic and should not be eaten in large amounts; eating too much causes blurred vision as a result of the poisoning, which is treated with ginger juice. Therefore, people with eye diseases should not eat much celtuce.

4. Stop before going too far

Celtuce should be eaten in moderation; eating it in large amounts may cause poisoning symptoms such as dizziness and drowsiness, and may also cause night blindness.

2. Distribution of celtuce's places of origin

Celtuce originated along the Mediterranean coast and was introduced into China via West Asia around the early 7th century, and it is now widely cultivated in various places.

3. Growth habits of celtuce

Celtuce is sensitive to the acidity and alkalinity of the soil and is suitable for planting in slightly acidic soil. Celtuce has a shallow root system and weak absorption capacity, and it has a relatively high demand for oxygen, so sandy loam and loam are best for the soil in which celtuce is grown.