“Singing can be joyful, especially around the holidays. It may also provide health benefits, some research suggests.

• Singing and asthma: Studies have found that singing helps people with asthma and bronchitis because of the deep breathing, and because a variety of muscles, such as the diaphragm, get a workout. There’s even some evidence that singing lessons can help suppress snoring.

• Singing and the immune system: Researchers in Germany looked at antibodies (part of a healthy immune response) and stress hormones in members of an amateur choir, comparing levels when the singers were singing or just listening. Their stress hormones went up when they listened, and their antibodies went up when they sang, possibly because singing made the singers feel good and they didn’t like just listening. Temporary changes in immunity mean very little, however. Many activities produce ups and downs in antibodies and stress hormones.

• Singing and aging: In a survey called “Creativity and Aging” from researchers at George Washington University, members of senior chorales in the District of Columbia, San Francisco, and Brooklyn reported better health and fewer falls than non-singers.

• Singing and Alzheimer’s: A British branch of the Alzheimer’s Society reports that singing is helpful for patients with dementia. Singing familiar songs and learning new ones can help build self-esteem and alleviate loneliness. Though there is no proof that engaging in such memory-dependent exercises as singing or learning new mental skills can prevent Alzheimer’s, many experts think such activities may at least help delay the onset of memory problems in some people.