91 women and 39 men had surgical procedures to try to reduce weight in 2020.
The HSE spent over 1.1 million euro on surgery to treat seriously obese patients last year.
130 people went under the knife, according to freedom of information figures.
Eoghan Murphy reports
Ireland has the second highest obesity rate in the EU, with over one in four adults in that category.
The HSE says 91 women and 39 men had surgical procedures to try to reduce weight in 2020.
Some people had their stomachs removed or reduced in size, to limit food intake.
Suzie Birney, from the Irish Coalition for People Who Live with Obesity, says she had a gastric bypass
.