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.
However, in terms of nutrient density, none are healthier than Romaine. How to Reap the Health Benefits of Romaine Lettuce. There are plenty of other green leafs which are even healthier such as spinach, kale, arugula, radicchio, endive etc, but for common lettuce types, romaine is king.Leafy greens in general are likely the number one food you can eat to regularly help improve your health.he vitamins, minerals, phytonutrients and fiber found in romaine lettuce are especially good for the prevention or alleviation of many common health complaints. As with other dark leafy greens, the antioxidants contained within romaine lettuce are believed to help prevent cancer.