The Paleolithic (Caveman) diet is based on foods that would have been consumed during the Paleolithic era. A study found that healthy sedentary people who followed the diet for a short term saw improved blood pressure, glucose tolerance, insulin levels, and lipid profiles without weight loss. The diet consists primarily of lean meats, fish, fruits, vegetables, eggs and nuts. While high in nutrients, it is low in calcium and fiber. Overall, the diet appears to provide health benefits for metabolic measures and cardiovascular risk factors in the short term for healthy individuals.