These substances cause excessive amounts of water to remain in the stool, leading to diarrhea. Certain foods (such as some fruits and beans) and sugar substitutes in dietetic foods, candy, and chewing gum (for example, hexitols, sorbitol, and mannitol) can cause osmotic diarrhea.
The four most common types of green lettuce -- green leaf, romaine, butterhead and iceberg -- have 13 to 17 calories in 100 grams, which is about a 1/2-cup serving of shredded lettuce. They deliver 1 gram of protein, or about 2 percent of the recommended daily intake.
Like other lettuces, Romaine lettuce seeds are very fine. Plant in rows, spreading the seeds as thinly as possible. No matter how hard you try, the seeds are very difficult to disperse. Thinning seedlings is must. Cover the seeds with a very fine layer of loose soil or starting mixture.he key to growing crisp, sweet Romaine lettuce, is to get it growing at a fast pace. That means plenty of water, and a healthy dose of fertilizer. Tip: When transplanting lettuce in hot weather, place some form of sun shade over the plant for a couple of days.