But it's clear, they add, that the risk is lower than previously believed.
For cannabis, the risk is lower, since much of it is now grown closer to home.
Today the risk is lower still -- about a quarter the chance of dying in a car accident.
In fact, a new study reports, doctors could be misled into concluding that a patient's risk is lower than it really is.
That is because even though the individual risk is lower, the vast majority of babies, healthy and unhealthy, are born to younger women.
But Locatelli said: "We don't yet know if the cost of electricity from an SMR is going to be cheaper than from big plants, but the risk is lower" because the capital needed is smaller.
That is 50,000 fewer tests taken than the year before and the lowest number for six years.For some schools, the risk is lower.
For investors, a guarantee of a long-term payment from a financially stable municipal or investor-owned utility is supposed to make the cost of capital cheaper, because the risk is lower.
"As long as you still have good passwords, your risk is lower because they would still have to crack your passwords to get in," says Rich Mogull, chief executive at Securosis, a security research and analysis firm.
About 5 to 10 percent of men carrying BRCA2 mutations will develop breast cancer in their lifetimes; the risk is lower, about 1 to 2 percent, for men carrying BRCA1 mutations.
Mummy risk is lower here, but still.
