U.S. Unauthorized Immigration Flows Are Down Sharply Since Mid-Decade

Estimates changes in the 2007-09 inflow of unauthorized immigrants compared with 2000-07 by state, country of origin, gender, and age; their share in the labor force, and impact on the overall unauthorized population. Considers contributing factors

Unauthorized Immigrant Population: National and State Trends, 2010

Analyzes trends in the estimated number of unauthorized immigrants overall, in the workforce, and of newborns with at least one unauthorized-immigrant parent. Examines unauthorized populations by state, share of state population, and settlement patterns

Trends in Unauthorized Immigration: Undocumented Inflow Now Trails Legal Inflow

Analyzes trends in the populations and annual inflows of undocumented and legal immigrants in the United States between 2000 and 2008. Presents findings on the composition of the foreign-born population in terms of arrival year and country of birth

U.S. Population Projections: 2005-2050

Projects population growth, new immigrants and their descendants as a percentage of that growth, and changes in the population's ethnic/racial composition. Analyzes the "dependency ratio" of children and elderly to working-age Americans

A Portrait of Unauthorized Immigrants in the United States

Presents a demographic snapshot of the unauthorized immigrant population, including growth rates, regions of origin and settlement, family structure, portions of schoolchildren and the labor force, education, income level, and health insurance status

How Many Hispanics? Comparing New Census Counts With the Latest Census Estimates

Examines differences between 2010 census data on the Latino/Hispanic population nationwide as well as in each state with April 2010 estimates by the Census Bureau. Compares results with the 1990 and 2000 census counts

Mexican Immigrants: How Many Come? How Many Leave?

Based on U.S. and Mexican government data, analyzes 2001-09 trends in the flow of Mexican immigrants into the United States and that of Mexican-born migrants returning from the U.S. Examines claims that migrants are leaving due to the 2008-09 recession

Rise in U.S. Immigrants From El Salvador, Guatemala and Honduras Outpaces Growth From Elsewhere

The number of immigrants in the United States from El Salvador, Guatemala and Honduras rose by 25% from 2007 to 2015, in contrast to more modest growth of the country's overall foreign-born population and a decline from neighboring Mexico.During these same years, the total U.S. immigrant population increased by 10%, while the number of U.S. Mexican immigrants decreased by 6%, according to a Pew Research Center analysis of U.S. Census Bureau data

Hepatic accumulation of intestinal cholesterol is decreased and fecal cholesterol excretion is increased in mice fed a high-fat diet supplemented with milk phospholipids

<p>Abstract</p> <p>Background</p> <p>Milk phospholipids (PLs) reduce liver lipid levels when given as a dietary supplement to mice fed a high-fat diet. We have speculated that this might be due to reduced intestinal cholesterol uptake.</p> <p>Methods</p> <p>Mice were given a high-fat diet for 3 or 5 weeks that had no added PL or that were supplemented with 1.2% by wt PL from cow's milk. Two milk PL preparations were investigated: a) a PL-rich dairy milk extract (PLRDME), and b) a commercially-available milk PL concentrate (PC-700). Intestinal cholesterol uptake was assessed by measuring fecal and hepatic radioactivity after intragastric administration of [¹⁴C]cholesterol and [³H]sitostanol. Fecal and hepatic lipids were measured enzymatically and by ESI-MS/MS.</p> <p>Results</p> <p>Both PL preparations led to significant decreases in total liver cholesterol and triglyceride (-20% to -60%, <it>P </it>< 0.05). Hepatic accumulation of intragastrically-administered [¹⁴C]cholesterol was significantly less (-30% to -60%, <it>P </it>< 0.05) and fecal excretion of [¹⁴C]cholesterol and unlabeled cholesterol was significantly higher in PL-supplemented mice (+15% to +30%, <it>P </it>< 0.05). Liver cholesterol and triglyceride levels were positively correlated with hepatic accumulation of intragastrically-administered [¹⁴C]cholesterol (<it>P </it>< 0.001) and negatively correlated with fecal excretion of [¹⁴C]cholesterol (<it>P </it>< 0.05). Increased PL and ceramide levels in the diet of mice supplemented with milk PL were associated with significantly higher levels of fecal PL and ceramide excretion, but reduced levels of hepatic PL and ceramide, specifically, phosphatidylcholine (-21%, <it>P </it>< 0.05) and monohexosylceramide (-33%, <it>P </it>< 0.01).</p> <p>Conclusion</p> <p>These results indicate that milk PL extracts reduce hepatic accumulation of intestinal cholesterol and increase fecal cholesterol excretion when given to mice fed a high-fat diet.</p