Los Angeles, Feb. 11 -- Singer Demi Lovato has cancelled several tour dates and postponed the start of her upcoming 'It's Not That Deep Tour', citing the need to prioritise her health, according to Deadline.

In a statement shared on social media, Lovato said she realised she had "overextended what may be possible" while preparing for the tour.

"I am so excited to get back on stage this year and visit you in as many cities as I can," she wrote in a message addressed to her fans, known as Lovatics. "While starting to prepare for the tour, I realised that I have overextended what may be possible," as per the outlet.

The 'Cool For the Summer' singer explained that the decision was made to safeguard her mental and physical well-being.

"To ...