内容摘要：shows synthetic food colors common in U.S. foods are linked to neurobehavioral problems in children and that the dyes may cause or exacerbate symptoms, particularly hyperactivity. In addition, children may vary widely in their sensitivity to the dyes.

shows synthetic food colors common in U.S. foods are linked to neurobehavioral problems in children and that the dyes may cause or exacerbate symptoms, particularly hyperactivity. In addition, children may vary widely in their sensitivity to the dyes.

This article is part of AP’s Be Well coverage, focusing on wellness, fitness, diet and mental health.It starts with a biopsy-like removal of a small amount of testicular tissue that contains millions of cells – some of them precious sperm-producing stem cells.

from about 1,000 prepubertal boys.It’s impossible to tell if enough stem cells are in each tiny sample to matter. But in 2019, Orwig used preserved testicular tissue from a young male monkey that, in an animal version of IVF, led to the birth of a healthy baby monkey.By 2023, Orwig was ready to reimplant now-grown cancer survivors’ cells when Hsu — not ready to start a family yet but curious about his long-ago study participation — reached out.

“We’re not expecting a miracle result,” cautioned Orwig, whose colleagues transplanted Hsu’s thawed cells in November 2023.this week, Orwig reported the injection, guided by ultrasound to the right spot, was safe and easy to perform. His work has not yet been reviewed by other scientists.

And Orwig said it’s too soon to know if the experiment worked and standard tests likely won’t tell, as animal testing found assisted reproduction techniques were needed to detect and retrieve small amounts of sperm. Still, he hopes the ongoing research will alert more families to consider fertility preservation so they’d have the option if it eventually pans out.

Belgian researchers announced a similar experiment in January, implanting pieces of testicular tissue rather than cells in a childhood cancer survivor.The surgeon general, considered the nation’s doctor, oversees 6,000 U.S. Public Health Service Corps members and can issue advisories that warn of public health threats.

In March, the White House pulled from consideration the nomination of former Florida GOP Rep.to lead the Centers for Disease Control and Prevention. His skepticism on vaccines had

, and he withdrew after being told by the White House that he did not have enough support to be confirmed.The withdrawal was first reported by Bloomberg News.