As a child at a younger age than 5, one estimate shows the brain occupying more than half of the body's entire energy budget. And at newborn -- as a newborn, that number may be as high as 87 percent. And another expensive thing that the body does is fights off infectious disease. And so, like any kind of budget, if you have a limited amount of funds, if you take money out of one area, it has to come from somewhere.
RAY SUAREZ: Eppig found that countries with the highest levels of infectious disease also had the lowest average I.Q.s. Researchers matched I.Q. estimates of 192 countries against 28 infectious diseases listed by the World Health Organization. Mozambique, which ranks at the bottom of I.Q. scores, also tops the charts in disease burden.
CHRISTOPHER EPPIG: The structure and the size of our brain is what gives us our intelligence. And, so, exposure to disease early in childhood can affect the way the brain is built, the way it's structured. And throughout your adult life, you can be left with a brain that wasn't built quite correctly.
DR. EMANUELE CAPOBIANCO, chief of health and nutrition, UNICEF, Mozambique: The study basically says that, if you fight infectious disease, that you will raise I.Q. of a nation.
If this proposition is true, by fighting infectious diseases, you bring up the I.Q. of a nation, which means the productivity of a nation, is a very strong argument for investing in health, in fighting infectious diseases. It's an economic argument that can be extremely strong and powerful for a police maker who will have to decide how to prioritize their investment."
Domestically one program offering food assistance to people in or on the edge of poverty has had a positive impact. "RAY SUAREZ: Has there been any change in who is hungry? As people have lost income, lost their jobs, has the population of the hungry changed?
DAVID BECKMANN: Well, the big increase in hunger is because of unemployment. So, much more than before, it's young people with children, people who have lost their job, people who maybe can't get a full-time job. They're working a few hours, 20 hours a week, but they can't feed their kids. That's the big surge.
RAY SUAREZ: So, we're seeing a lot of new people in that population, people who haven't had this problem before and now are downwardly mobile?
DAVID BECKMANN: Right. There are lots of cases where people five years ago were contributing to food banks. And now they have to go into food pantries to -- to complement what they can afford to buy at a grocery store for their children. That's why it's so important that we do things like provide tax credits for the working poor, so, if somebody's got an $8-an-hour job, that they can get a little bit of extra income that they can use to get their car fixed or maybe enroll in a program as a dental hygienist.
Food banks can provide that kind of assistance. You know, they can provide a couple bags of groceries. And, in fact, people who are struggling with unemployment and the current economy need also to have the supports that we can provide them through our government.
You know, some people -- some people are talking like, you know, the way to improve our economy is to cut programs for poor people. This is bunk. First, we need to help people who are struggling get a leg up. That's good for the economy, for everybody.
And the programs that help poor people are tiny in relationship to the federal budget. So, we need to strengthen those programs, make them work as -- just as effectively as we can for poor people, at this time of real crisis for many families."