Happy lights take the gloom out of winter

With short days and fewer options to socialize this winter, more people than ever may find themselves in need of a boost to help with lagging energy or even depression during the dark months.

Many people swear by their “happy lights,” a whimsical term for light therapy. Used as a way to treat seasonal affective disorder (SAD) and other conditions, light therapy involves sitting near a device called a light therapy box for a period of time each day. It’s also known as bright light therapy or phototherapy

The light therapy box gives off a bright light that mimics sunshine. The Mayo Clinic says it is thought to affect brain chemicals linked to mood and sleep. The boxes may ease SAD symptoms and help with other types of depression, sleep disorders, and other conditions like jet lag or dementia.

A few studies have demonstrated benefits for seniors whose sleep patterns have become disrupted and in seniors who were diagnosed with depression.

Light therapy boxes should filter out UV light, so look for one that emits as little as possible. They are available in a variety of intensities, measured in units called lux. During a light therapy session, you sit or work near the light box placed 16 to 24 inches away for about 20 to 30 minutes a day. Most people use them shortly after getting up in the morning.

The Mayo Clinic recommends talking with your doctor before using one and specifically recommends that those diagnosed with bipolar disorder consult a physician first, as a light box may trigger mania in these patients.