The Sharon Board of Health discussed draft regulations Dec. 17 aimed at raising the legal age to buy tobacco products in town. Members also talked about whether Sharon could legally ban the use of tobacco in private clubs, such as fraternal organizations and country clubs. The board plans to hold a public information session, tentatively set for Jan. 28, before taking a vote at a later meeting. Chairwoman Susan Peck told the Globe that future discussion will probably include whether to raise Sharon’s legal age for tobacco purchases from 18 to 21 immediately or incrementally. At least two communities in Massachusetts have raised the age to 19 in an effort to keep cigarettes out of the hands of high school students. Needham has raised the age to 21.