Tag Archives: dementia

Poor sleep habits linked with dementia

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Do you have trouble falling asleep? Do you fall asleep around 2 or 3 a.m. and sleep until noon? Or do you wake up at 4 a.m. and can’t fall back asleep?

Studies show insomnia does more than make the days drag — it raises your risk of dementia later in life. Heart disease, diabetes, obesity, mood disturbances, constipation, prostate cancer, and breast cancer have all been linked with poor sleep.

Poor sleep is a growing problem, as is dementia. Twenty percent of the population is estimated to sleep too little (less than 6 hours a night). Insomnia is the most common sleep disorder today, affecting 64 million people, and one in three people over 65 will die of dementia.

Researchers found a particularly strong link between poor rapid eye movement (REM) sleep and dementia. These people do not go into the deep enough REM sleep that induces paralysis. Instead, they have vivid, violent dreams that they act out through punching, kicking, screaming, and even jumping out of bed.

Sixty-three percent of people with this REM disorder develop dementia or Parkinson’s later in life.

The sleep wake cycle and dementia risk

Our circadian rhythm regulates our sleep/wake cycles — when we feel tired at night and alert in the morning. A healthy circadian rhythm is tied to daylight and darkness and governs sleeping and waking.

However, when this sleep/wake cycle becomes overly imbalanced, your risk of developing dementia, Alzheimer’s, and other diseases increases.

This is because the area of the brain that governs the circadian rhythm, the hippocampus, also plays a role in short-term memory and learning. The hippocampus is the first area of the brain to degenerate in dementia and Alzheimer’s disease.

Constant problems with your cycles of sleeping and waking could point to problems in the hippocampus and an increased risk of dementia later in life.

The sleep-wake cycle and dementia

Researchers have found the risk of dementia was higher in older women with weak circadian rhythms, and tracking circadian rhythms over time has been shown to predict cognitive decline in older adults.

Are you at risk for dementia later in life?

How do you know if your circadian rhythm is off balance? Look at whether you suffer from any of the following symptoms:

  • Difficulty falling asleep or staying asleep
  • Difficulty waking in the morning
  • Not feeling rested after sleep
  • Poor recovery from exercise
  • Drop of energy between 4 –7 p.m.

Preventing dementia by supporting sleep

Fortunately, there are steps you can take to better regulate your circadian rhythm and lower the risk for dementia. A primary tactic is to regulate cortisol, an adrenal stress hormone. Studies show high cortisol from constant physical or mental stress degenerates the hippocampus.

Stress isn’t just a lifestyle issue. Stress is also be caused by blood sugar swings, inflammation  food intolerances, hormone imbalances, and other metabolic issues. Inflammation in particular is associated with degeneration of the hippocampus. High homocysteine on a blood panel, a telltale sign of inflammation, is one way to determine whether inflammation is undermining your brain health.

Inflammation and dementia

A primary way to normalize the circadian rhythm and reduce your risk of dementia is to reduce inflammation. Your diet is the first places to start. This includes removing foods to which you are sensitive (gluten and dairy are among the more common), stabilizing your blood sugar, and eliminating processed foods.

Ask us about an anti-inflammatory diet, improving sleep, and other tools to lower the risk of dementia.

Worried about losing your memory? Eat your greens

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Memory loss and dementia are valid concerns for everyone these days: one in three seniors dies of Alzheimer’s or dementia and Alzheimer’s is the sixth leading cause of death in the United States. Fortunately, dementia is largely preventable with many lifestyle and dietary adjustments, one of which is including plenty of greens in your diet.

New research shows eating plenty of spinach, kale, collards, and mustard greens can help slow cognitive decline. Researchers believe the high vitamin K content in these vegetables plays a role in preserving brain health.

The study tracked almost 1,000 older adults during five years and saw significantly less cognitive decline in participants who ate leafy green vegetables.

In fact, the elders who ate one to two servings a day of leafy greens had the cognitive ability of someone 11 years younger.

Researchers credited not only the vitamin K in leafy greens for slowing cognitive decline, but also lutein and beta-carotene. Other brightly colored fruits and vegetables are also high in these vitamins.

Vitamins aren’t the only brain benefits of leafy greens — greens promote healthy gut bacteria

The vitamins in leafy greens aren’t their only benefits.

For one, leafy greens are also rich in fiber, which are good for the gut. Plenty of dietary fiber not only prevents constipation, but it also supports the healthy bacteria in your gut. People who eat diets high in plant fiber show a more beneficial composition of gut bacteria compared to those who eat a typical western diet.

Scientists have increasingly been discovering how vital beneficial gut bacteria are to brain health. For instance, healthy gut bacteria promote the integrity of the blood-brain barrier, the lining that protects the brain.

Gut bacteria have also been shown to influence depression, anxiety, learning, and memory. This is because the gut and the brain communicate closely with one another through the vagus nerve, a large nerve that runs between the brain and the organs.

Eating greens is usually part of a healthy brain lifestyle

Another factor to consider with this study is that people who eat greens every day are typically more conscious of their health. Someone who is taking the time to shop for and prepare greens every day is probably eating a healthier, whole foods diet and avoiding dementia-promoting junk foods, sodas, and sugars.

Exercise is the golden bullet to lasting brain health

People who eat healthier also tend to exercise more regularly, whether it’s just taking a daily walk or hitting the gym every day. Both strength training and aerobic exercise have been shown protect neuron health, ensure better blood flow to the brain, and protect the brain from the damaging proteins that cause Alzheimer’s.

One study that followed more than 600 people ages 70 and older found those who engaged in the most physical activity showed the least amount of brain shrinkage.

Another study found that older adults who walked as little as 30 to 45 minutes three days a week increased the volume of the part of the brain responsible for learning and memory.

So although eating your greens is a great way to boost brain health (and gut health), if you eat your greens AND exercise every day, you drastically reduce your chances of developing dementia and Alzheimer’s. Considering there is no cure for dementia and Alzheimer’s — the neurons that die in these conditions cannot be recovered — the best approach is a preventive one.

Ask my office for more details on lowering your risk of dementia and Alzheimer’s.