Medical experts have raised the alarm following reports increasing numbers of women are using toothpaste to "tighten" their vaginas.

Dr Oluwole Yusuf issued a plea to women via the News Agency of Nigeria late last week in comments that were soon backed by specialists across the world.

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"Toothpaste is caustic and too abrasive for a sensitive body part like the vagina and using such on it can destroy the organisms meant to protect the vagina from possible infections," he said.

"When the vagina can no longer protect itself, the body is prone to infections which could later destroy the tubes and block the chances of getting pregnant,’’ Yusuf said.

His concern was echoed by British specialist Vanessa Mackay, consultant gynecologist and spokesperson for the Royal College of Obstetricians and Gynecologists.

“It is a myth that toothpaste will tighten the vagina," she said.

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“Putting toothpaste into the vagina, or on the vulva, would not only be uncomfortable but it could also cause serious damage and disrupt the natural flora of the vagina leading to the potential for infections like bacterial vaginosis and thrush.”

And MacKay said many toothpaste brands also contained small particles that could cause abrasions on the vaginal wall.

Both she and Yusuf recommend pelvic floor exercises for concerned women.

MacKay said if women were still concerned they should make an appointment with their specialist.