Dr. Kyle: The Consensus On Coffee

Coffee is one of the most popular beverages around the world. In the US, 64% of adults report drinking at least one cup of coffee per day. That’s a lot of coffee!

Many people choose coffee as their drink of choice for the wakefulness they experience due to the effects of caffeine. But how does all this coffee effect our health? As it turns out, coffee may actually have other important benefits than just getting us going in the morning.

A number of recent studies have focused on the protective effects of coffee for cardiovascular disease (CVD). Habitual coffee consumption has been shown to lower the risk of cardiovascular death and associated adverse outcomes such as coronary heart disease, congestive heart failure and stroke.

Interestingly, healthy men and women from the ages 55-74 who consumed greater or equal to 2 cups of coffee a day showed about a 25% lower risk of CVD for both caffeinated and decaffeinated coffee.

Regular coffee consumption also appears to protect against neurodegenerative disorders such as Alzheimer’s and Parkinson’s disease. Some studies suggest it may even lower the risk of liver disease and cancer.

So what’s the secret?

Coffee is rich in polyphenols. These bioactive compounds act as potent antioxidants and help improve glucose metabolism and vascular function. One polyphenol in particular, chlorogenic acid, significantly reduces chronic inflammation.

That being said, excessive coffee consumption has also been associated with developing insomnia, anxiety, headaches and palpitations, largely due to the high caffeine content. For some people, large doses of caffeine will wreak havoc on their adrenals and lead to chronically elevated cortisol levels.

So what are my recommendation?

• Do not drink caffeinated coffee after 2pm.
• Some cream (or grass-fed butter) is ok, stay away from adding granulated sugar.
• Be mindful of your caffeine intake.
• Buy “washed” instead of “natural process” coffee beans
• Look for high quality coffee beans from Central America, grown at high altitude.

Last step: Enjoy your morning coffee guilt free. You may even notice a boost in energy and greater focus throughout the day.

References:

van Dongen LH, Mölenberg FJ, Soedamah-Muthu SS, Kromhout D, Geleijnse JM. Coffee consumption after myocardial infarction and risk of cardiovascular mortality: a prospective analysis in the Alpha Omega Cohort. The American Journal of Clinical Nutrition. 2017 Oct 1;106(4):1113-20.

Grosso G, Micek A, Godos J, Sciacca S, Pajak A, Martínez-González MA, Giovannucci EL, Galvano F. Coffee consumption and risk of all-cause, cardiovascular, and cancer mortality in smokers and non-smokers: A dose-response meta-analysis.

O’Keefe JH, DiNicolantonio JJ, Lavie CJ. Coffee for cardioprotection and longevity. Progress in cardiovascular diseases. 2018 Feb 21.

Dr. Phil Shares: Insulin Resistance Causes and Symptoms

One in three North Americans—including half of those age 60 and older— have a silent blood sugar problem known as insulin resistance. Insulin resistance increases the risk for prediabetes, type 2 diabetes and a host of other serious health problems, including heart attacks, strokes and cancer.

What is Insulin Resistance?

Insulin resistance is when cells in your muscles, body fat and liver start resisting or ignoring the signal that the hormone insulin is trying to send out—which is to grab glucose out of the bloodstream and put it into our cells. Glucose, also known as blood sugar, is the body’s main source of fuel. We get glucose from grains, fruit, vegetables, dairy products, and drinks that bring break down into carbohydrates.

How Insulin Resistance Develops

While genetics, aging and ethnicity play roles in developing insulin sensitivity, the driving forces behind insulin resistance include excess body weight, too much belly fat, a lack of exercise, smoking, and even skimping on sleep.4

As insulin resistance develops, your body fights back by producing more insulin. Over months and years, the beta cells in your pancreas that are working so hard to make insulin get worn out and can no longer keep pace with the demand for more and more insulin. Then – years after insulin resistance silently began – your blood sugar may begin to rise and you may develop prediabetes or type 2 diabetes. You may also develop non-alcoholic fatty liver disease (NAFLD), a growing problem associated with insulin resistance that boosts your risk for liver damage and heart disease. 5

Signs and Symptoms of Insulin Resistance

Insulin resistance is usually triggered by a combination of factors linked to weight, age, genetics, being sedentary and smoking.

– A large waist. Experts say the best way to tell whether you’re at risk for insulin resistance involves a tape measure and moment of truth in front of the bathroom mirror. A waist that measures 35 inches or more for women, 40 or more for men (31.5 inches for women and 35.5 inches for men if you’re of Southeast Asian, Chinese or Japanese descent)increases the odds of insulin resistance and metabolic syndrome, which is also linked to insulin resistance.

– You have additional signs of metabolic syndrome. According to the National Institutes of Health,in addition to a large waist, if you have three or more of the following, you likely have metabolic syndrome, which creates insulin resistance.

  • High triglycerides. Levels of 150 or higher, or taking medication to treat high levels of these blood fats.
  • Low HDLs. Low-density lipoprotein levels below 50 for women and 40 for men – or taking medication to raise low high-density lipoprotein (HDL) levels.
  • High blood pressure. Readings of 130/85 mmHg or higher, or taking medication to control high blood pressure
  • High blood sugar. Levels of 100-125 mg/dl (the prediabetes range) or over 125 (diabetes).
  • High fasting blood sugar (or you’re on medicine to treat high blood sugar). Mildly high blood sugar may be an early sign of diabetes.

– You develop dark skin patches. If insulin resistance is severe, you may have visible skin changes. These include patches of darkened skin on the back of your neck or on your elbows, knees, knuckles or armpits. This discoloration is called acanthosis nigricans.8

Health Conditions Related to Insulin Resistance

An estimated 87 million American adults have prediabetes; 30-50% will go on to develop full-blown type 2 diabetes. In addition, up to 80% of people with type 2 diabetes have NAFLD.9 But those aren’t the only threats posed by insulin resistance.

Thanks to years of high insulin levels followed by an onslaught of cell-damaging high blood sugar, people with insulin resistance, prediabetes and type 2 diabetes are at high risk for cardiovascular disease. Insulin resistance doubles your risk for heart attack and stroke – and triples the odds that your heart attack or ‘brain attack’ will be deadly, according to the International Diabetes Federation.10

Meanwhile, insulin resistance and metabolic syndrome are also linked with higher risk for cancers of the bladder, breast, colon, cervix, pancreas, prostate and uterus.11, 12  The connection: High insulin levels early in insulin resistance seem to fuel the growth of tumors and to suppress the body’s ability to protect itself by killing off malignant cells. 13

How You Can Prevent or Reverse Insulin Resistance

Losing weight, getting regular exercise and not skimping on sleep can all help improve your insulin sensitivity. Don’t rely on dieting or exercise alone: in one fascinating University of New Mexico School of Medicine study, published in the International Journal of Obesity, overweight people who lost 10% of their weight through diet plus exercise saw insulin sensitivity improve by an impressive 80%. Those who lost the same amount of weight through diet alone got a 38% increase. And those who simply got more exercise, but didn’t lose much weight, saw almost no shift in their level of insulin resistance.14 

Turn in on time, too. In a study presented at the 2015 meeting of the Obesity Society, researchers found that just one night of sleep deprivation boosted insulin resistance as much as eating high-fat foods for six months.15

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