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Memory slips are aggravating, frustrating, and sometimes worrisome. When they happen more than they should, they can trigger fears of looming dementia or Alzheimer’s disease. But there are some treatable causes of forgetfulness.

Millions of Americans have trouble sleeping, a factor that is key to cardiovascular health. Two recent studies examined the relationship between sleep and heart health, and between sleep and dietary choices.

Cannabis use among older adults has been steadily increasing, due to lessening stigma and increased interest in using medical marijuana. But there are specific concerns for older people, so anyone considering this option should have a conversation with their doctor weighing the benefits and risks.

Here's how to maintain your current active lifestyle.

Older adults want to enjoy their independent living as long as possible. Yet this can become a challenge as people face more health issues.

"Most life changes that cause older adults to lose some or all of their independence occur either gradually or suddenly," says Dr. Jennifer Rhodes-Kropf, a primary care geriatrician at Harvard-affiliated Hebrew SeniorLife's Center Communities of Brookline, Mass. "You need to stay on top of critical areas that can jeopardize your health and lifestyle."

Sleep-maintenance insomnia common complaint among women at midlife

You wake up and look at the clock: it's 3 a.m. You tell yourself you've got to get back to sleep, but thoughts about yesterday's troubles, the coming day's challenges, and all those "must-do's" race through your mind. You toss and turn and worry about not getting enough sleep. Maybe you doze off for an hour or so, but when the alarm clock gets you up for the day, you're far from rested.

Insomnia � inability to get the sleep you need to wake up refreshed � is the most common sleep complaint in the United States. It often takes the form of sleep-maintenance insomnia � that is, difficulty staying asleep, and in particular, waking too early and struggling to get back to sleep. Like difficulty falling asleep at the beginning of the night, called sleep-onset insomnia, sleep-maintenance insomnia is more common in women than in men.

Ask the doctors

Q. I've heard a lot recently about inflammation being a health risk, but I'm not sure I really understand what it is. Can you explain?

A. When people talk about inflammation, they're actually talking about your immune system's response to a perceived injury or infection. When you're injured, this inflammation is actually a good thing. The area you injured will become red and swell as an army of beneficial white blood cells flow in to fight infection and help you heal. The same response occurs in other parts of your body when you encounter a virus or infection. But sometimes this immune response occurs when it shouldn't. It can be triggered, for example, when you are exposed to toxins, and by other causes such as chronic stress, obesity, and autoimmune disorders. In these cases, instead of moving in, healing the problem, and then returning to normal, the inflammation persists over time. It's thought that this chronic state of inflammation can lead to numerous health problems, including heart disease, arthritis, depression, Alzheimer's disease, and even cancer.

What Is It?

A person who is sleepwalking walks or makes other movements that seem purposeful. This occurs while in a state of partial wakefulness from deep sleep. Contrary to popular belief, sleepwalkers don't act out their dreams. Sleepwalking doesn't take place during the dreaming stage of sleep.

Sleepwalking is also called somnambulism. It is common in school-age children. Repeated sleepwalking is more common in boys. It is frequently associated with nighttime bedwetting.

Researchers examining dietary data from over 50,000 postmenopausal women found that women who ate foods with a higher glycemic index, and foods with more added sugars, were more likely to have insomnia.