New Delhi, Aug. 5 -- In China, adult pacifiers have become popular as tools to ease anxiety and help with sleep. Online shops say they sell over 2,000 pieces each month.

These dummies are larger than baby ones and cost between 10 and 500 yuan ( Rs.122 to Rs.6,000). Sellers claim they reduce stress, improve sleep and even help people stop smoking. Some also say they support better breathing, the South China Morning Post reported.

The pacifiers come with transparent nipples and colourful shields. Buyers have shared positive reviews online.

"It is high quality, soft, and I feel comfortable sucking it. It does not impede my breathing," SCMP quoted one customer as saying.

"It is amazing in helping me quit smoking. It gives me psychological...