Roni Caryn Rabin

Explaining why officials dropped limits, Dr. Mehmet Oz said alcohol “brings people together.” But social drinking also can lead to health problems, studies show.

The prohibition halts support for projects both inside and outside the N.I.H. President Biden had restored funding after an earlier ban by President Trump during his first term.

Federal officials working on the new dietary guidelines had considered limiting men to one drink daily. The final advice was only that everyone should drink less.

Now the government’s recommendation is to “limit” drinking, without specifying safe amounts for men and women. The guidelines no longer warn of risks like cancer.

More than 500 women claimed that they had received unnecessary operations. Hospital leaders said they were not aware of a doctor’s misconduct.

The American Heart Association report runs contrary to recent studies — and the group’s own guidelines — that found any amount of alcohol to be harmful.

A study of more than 45,000 women found that screening women according to their level of risk was as effective in detecting tumors as the one-size-fits-most screening currently recommended.