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Your brain is one of the most metabolically active organs in your body. At rest, it uses approximately 20-23 % of the body’s total energy requirements, despite accounting for only 2 % of the body’s mass. So it’s no wonder that when your metabolism slows down, your brain may be one of the first parts of your body to suffer the effects.

In the brain, slow metabolism due to low thyroid function can cause alterations in blood flow, along with reduced glucose uptake and energy production. It can make it

Dr. Denis Wilson has recently released (2014) his new book, “Evidence-based Approach to Restoring Thyroid Health.” This extensively referenced book will help doctors totally rethink the way they diagnose and treat low thyroid function. Hundreds of scientific references are included that support the use of T3 in patients with normal thyroid blood tests.

Prominent contributing authors include Michael Friedman, ND; Kent Holtorf, MD; David Brownstein, MD; Joseph Pizzorno, MD; Lara Pizzorno, MA. This book helps doctors maximize thyroid patient recovery rates by explaining T3 therapy for Wilson’s Temperature Syndrome as well as evidence-based nutritional and botanical approaches to thyroid health.

It’s well known that an overactive thyroid can cause trouble sleeping. But low thyroid hormone function can contribute to both trouble sleeping and daytime fatigue. That combination can drain your energy, make it hard to function and think straight, and set you up other other health problems, including obesity and diabetes.

One problem with identifying the root cause of this sort of fatigue is that you can have low thyroid hormone activity in your body even when the usual blood test for thyroid function, Thyroid Stimulating Hormone (TSH) is normal.

Intolerance to cold environment is very typical of low body temperatures. However, some people with low body temperatures experience heat intolerance and say they feel “hot all the time.” It’s not clear why this occurs. It’s not that their skin feels hot to the touch; it’s often cool. It’s that they may want the thermostat turned down when others want it turned up.

People with low body temperatures are usually cold intolerant, but some are heat intolerant.

If you are cold or heat intolerant, I suggest that you start taking your

I’m going to suggest a very simple way to improve your overall health, especially the balance of your endocrine system. Get outside in the sun for 20 minutes or so a day. Let the sun hit your skin–forearms and face is enough–and allow some indirect sunlight to get to your eyes by forgoing the sunglasses and brimmed hat.

Why? Natural sunlight has unique health benefits. For one thing, it allows your body to make vitamin D. You can make up to 10,000 IUs of vitamin D in one sunny

Do you know that saying “Bad things happen in threes”? Well, that seems to be the case when it comes to a set of symptoms. Depression, obesity and fibromyalgia seem to cluster together, and may actually have a common cause–low body temperature due to problems with thyroid hormone.

Thyroid hormone–specifically T3–regulates the body’s metabolic rate, and so, determines your body’s usual temperature. When thyroid hormone is low, or isn’t being used properly, your body temperature drops, and many of the biochemical processes in your body slow down. Energy metabolism slows, which means you don’t burn as many calories as you would

Metabolism is the rate at which your body uses energy–how fast your motor runs. When your metabolism is slow, all the processes in your body slow down. You might feel tired, depressed, cold, sluggish. You’ll find it hard to lose weight because your body will be more likely to store calories as fat, not burn calories for energy.

Here are some common causes of slow metabolism:

Too little sleep. While the occasional all-nighter forces your metabolism into high gear, chronic partial sleep loss (less then seven hours a night) has a profound effect on your metabolism. It affects glucose regulation, causing insulin

Stress can have a major impact on your body. Whether it is a new baby, menopause, an accident or injury, financial or legal concerns, or chronic illness, stress can throw your whole system off-balance. The normal “feedback” loops that maintain homeostasis–a state of equilibrium in your body—can get out of whack and the result can be fatigue, anxiety, irritability, insomnia, low sex drive, high blood pressure, disrupted menstrual cycles, low pain tolerance, inability to concentrate, burn-out. You may find it increasingly hard to recover fully from even minor set-backs.

Stress affects a feedback loop called the hypothalamus-pituitary-adrenal cortex (HPA axis). This

Getting to the bottom of why you’re tired all the time can be difficult. If you’re so run down that you see your doctor, chances are good that you’ll have your Thyroid Stimulating Hormone (TSH) level checked. If it’s normal, your doctor will assume it’s not thyroid-related, and move on to other tests, such as a Complete Blood Count (CBC), Lyme disease, vitamin D, B12, and occult blood in your stool. Liver enzymes, hepatitis exposure, sleep studies–the list of possible tests is endless.

While some of these tests might be worthwhile, depending on your symptoms and risk factors, there’s always a