Curium is a hard, brittle, radioactive silvery metal. It does not occur in nature and must be made in a nuclear reactor by neutron capture reactions from plutonium and americium isotopes. It tarnishes slowly in dry air at room temperature.
Romaine lettuce is a rich source of fiber and has very few calories, only 8 in a one-cup serving. In terms of vitamins, a cup of Romaine lettuce delivers more than 50% of your daily requirement for vitamin A, as well as significant levels of vitamin K and vitamin C.
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.