As Donald Trump moves closer to victory in his bid to return to the White House, the name of his former competitor and now ally Robert F Kennedy Jr. trending online.

Kennedy had previously said in a tweet that if Trump were to win, the White House would ask all water systems across the country to remove fluoride from public water that had been added to the water supply since the 1940s. The purpose behind the addition was to use fluoride to strengthen teeth and reduce cavities.

With trends showing that Donald Trump is likely to win the US elections, Kennedy’s proposal to remove fluoride from water has gone viral again. Moreover, as a staunch supporter of Trump, Kennedy is expected to play a major role in the Trump administration.

Google trends

Since Tuesday, Robert Kennedy has been searched for more than 2,00,000 times, Google Trends showed, and it all had to do with the debate over water supply in the US. The terms “robert kennedy” and “rfk jr” started to become popular around midnight on election day.

Robert Kennedy Jr and fluoride in water

“Fluoride is an industrial waste associated with arthritis, fractures, bone cancer, IQ loss, neurodevelopmental disorders and thyroid disease. President Donald Trump and First Lady Melania Trump want to make America healthy again,” Kennedy had said.

(Also read: RFK Jr wants to remove fluoride from public water, Trump responds)

Trump had previously said his proposal to remove the chemical from the water seemed “okay” to him.

Since the 1940s, the US has hailed the addition of fluoride to the water supply as one of the greatest public health achievements in the country’s history.

However, in 2011, the U.S. Department of Health and Human Services lowered the recommended fluoride levels in drinking water.

Despite Kennedy’s claims going viral, no major studies have shown that fluoride drinking water is linked to bone fractures, cancer or osteoporosis, especially in the small amounts added to water.