The Belarusian won the Australian Open in January, but was knocked out by 17-year-old Russian Mirra Andreeva in the French Open quarter-finals this month.
"Especially with all the struggles I've been struggling with the last months, I feel I have to take care of my health," Sabalenka told reporters at the Berlin Ladies Open.
"It's too much for the scheduling and I made the decision to take care of my health.
"I prefer to have a little rest to make sure physically and health-wise I'm ready for the hard courts."
Sabalenka will next be action against Russian Daria Kasatkina in the last 16 in Berlin.
The Paris Olympics run from July 26th-August 11th.
