Cardiff Central Assembly Member Jenny Rathbone is taking up the challenge from Alcohol Concern Cymru to go without a drop of alcohol for 31 days.
Each year the Cardiff-based charity encourages ordinary social drinkers to take a month off booze after the Christmas season.
Alcohol Concern Cymru Director, Andrew Misell, said:
"If we’re honest, alcohol plays much more of a part in our lives than it did in previous generations. It’s advertised, sold and drunk in many more places. Most of us have alcohol in the house, and we often see it as the simplest way to relax – a cold beer at the end a hard day’s work, or ‘wine o’clock’ on the sofa with a nice box-set.
"Dry January is not about getting anyone to stop drinking for ever more. It’s about all of us who drink having a pause for thought, and maybe getting out of some drinking routines we’ve got into – like when it’s ‘wine o’clock’ every night.
"If a month with no booze sounds like a step too far for you, we’d like to ask you to give it a go. If it sounds easy as pie, perhaps you should try it."
Cardiff Central Assembly Members, Jenny Rathbone, said:
"The Dry January challenge is a great opportunity to reassess our relationship with alcohol, as well as waking up with a clear head, saving some money, and possibly losing some weight. Above all, it’s about taking control of our drinking and working out how to enjoy a drink or two without overdoing it.
"This black Friday alone, 18 people were treated by NHS staff in Cardiff because of alcohol related injuries, and 15 on the Saturday"
"I’m glad to support this challenge, and looking forward to an alcohol-free month."