Is cheese healthy?

Who doesn�t like cheese?  Cheese pizza, grilled cheese sandwiches, cheese and crackers.  Many studies have been done on cheese and its health benefits.  So what is the latest � is cheese healthy or bad for our hearts and bodies?

The recent issue of the Wellness Letter from the University of California reported on the latest cheese research (Say Cheese?, September 2015). 

They noted the French consume a lot of cheese as I can verify having visited France last year.  Cheese and bread at breakfast, cheese and bread at lunch.  The French love their cheese.  Yet, the French have relatively low heart disease rates.  Why?

•  Heart Health � many people say cheese is not good for your heart because cheese has some bad fat in it, saturated fat.  A study in 2013 found no link between eating a lot of cheese and heart disease.  Another 2012 study found followed Swedish women for 12 years.  Surprisingly, the women who ate the most cheese had the lowest rate of heart attacks.  Other studies found that butter does raise your bad cholesterol, LDL but cheese does not.
• Diabetes � rather than raise your blood glucose, cheese seems to help stabilize it.  A study in the American Journal of Clinical Nutrition found that cheese and yogurt improved insulin sensitivity and control of blood glucose levels.  A Swedish study found that woman consuming cheese had a lower risk of diabetes.  They aren�t sure why but cheese does have fat and this slows stomach emptying which means less of a rise in blood sugar levels.
• Anticancer � The more dairy the less your risk of colon cancer probably because of the calcium in dairy and thus in cheese.  But other studies have been mixed as to whether cheese consumption reduces cancer risk.
• Weight � many studies have been done on dairy and weight.  A recent study suggests that cheese consumption is associated with less weight gain and may help a person control their weight.  A study in the Journal of Nutrition involving obese and overweight women found that those who consumer a high protein and a high dairy diet, exercised, restricted calories not only lost weight but loss more fat and gained muscle.
• Cavities � what does cheese have to do with cavities?  First, cheese doesn�t promote cavities and some research shows it may help prevent cavities.  Cheese helps build up the minerals in your teeth, the calcium, phosphorus and even protein promote mineralization.
• Nutrients � cheese is loaded with good nutrients: calcium, protein, vitamin A, B12, B2, zinc and other nutrients.  But most cheese has no or little vitamin D so milk or yogurt are needed to meet vitamin D needs. 

So enjoy some cheese this week.  If you want to cut back on the calories from cheese, choose part-skim mozzarella, mozzarella sticks, feta cheese, part-skim ricotta cheese, 2% cheddar, 2% Swiss which are made with 2% milk.  

Sources:  The Best Low-Fat Cheeses, Say Cheese?  Image source:  Cheese sticks

Nutrition Tips

What are some easy nutrition tips to eat healthier?   Eat This Not That  has some easy nutrition tips to follow: 

1. Out of Sight, Out of Mind - Hide the junk food and make healthier food more visible.  A study at Google noted that people ate less M & M�s if put in an opaque container.  They ate more fruit and nuts when these were displayed prominently.  In fact, staff ate 3.1 million less calories of M & M�s in an opaque container in seven weeks� time.
2. The 1 in 10 Rule:   Look at the nutrient label and for every 10 grams of carbs, look for at least one gram of fiber or 10 carbs:1 fiber.    Why is this important?  You want to have whole grains in your diet and this is the ratio of carbs to fiber in whole grains.  A study in the Public Health Nutrition journal found that carbs with the 10:1 ratio had less sodium, less sugar and less trans fats.
3. Cut calories by boosting flavor:  in the nutrition course I teach students have to modify a lasagna recipe to make it healthier.  One group took out all the spices and herbs not realizing these provided not only flavor but nutrients and essentially no calories.  Adding herbs and spices is an easy way to add flavor without the calories and without adding fat.  And if you add herbs and spices you can cut back on the sodium and still have a flavorful entree or side dish.
4. Whole fruit vs Juice?  Although juicing is popular right now, eating whole fruit has its advantages.  Eat at least 2 servings of whole fruit a week to cut your risk of type 2 diabetes by 23 percent. 
5. �Eat Before You Eat�  sounds like odd advice. But a cup of broth, a glass of water, an apple can reduce how much you eat at a meal by up to 20%.  This would be especially helpful at a restaurant as restaurant meals can pack a lot of calories.  The Journal of the American Medical Association notes the average restaurant meal provides 1,128 calories so cutting that by 20% would save you 225 calories.
6. Stay hydrated and drink that water:  According to the Journal of Clinical Endocrinology and Metabolism, drinking 17 ounces of water (a little over 2 cups) can raise your metabolic rate, thus burning up more calories.  So drink more water to rev up your metabolism.  The researchers in this study noted that adding 6 cups of water a day would burn up a lot of calories over the course of a year, about 17,400 calories. 

 For all 10 tips, go to The 10 Best Nutrition Tips Ever.

Sources:   The 10 Best Nutrition Tips Ever, Image source:  Drinking water

Insulin Resistance Predicts a Variety of Age-related Diseases

In the last post, I reviewed a study by Gerald Reaven's group showing that insulin resistance strongly predicts the risk of cardiovascular disease over a 5-year period. In 2001, Reaven's group published an even more striking follow-up result from the same cohort (1). This study shows that not only does insulin resistance predict cardiovascular disease risk, it also predicts a variety of age-related diseases, including hypertension, coronary heart disease, stroke, cancer, type 2 diabetes, and even overall mortality risk.

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Is Meat Unhealthy? Part V

In this post, I'll examine the possible relationship between meat intake and type 2 diabetes. Type 2 diabetes is the most common form of diabetes, and it is strongly linked to lifestyle factors.

Non-industrial cultures

Non-industrial cultures have an extremely low prevalence of diabetes, whether they are near-vegan or near-carnivorous. This is supported by blood glucose measurements in a variety of cultures, from the sweet potato farmers of the New Guinea highlands to the arctic Inuit hunters. Here is what Otto Schaefer, director of the Northern Medical Research Unit at Charles Camsell hospital in Edmonton, Canada, had to say about the Inuit in the excellent book Western Diseases (Trowell and Burkitt, 1981):
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Obesity ? Diabetes

A new study adds to the evidence that the prevalence of type 2 diabetes is rapidly increasing in the US, and our national weight problem is largely to blame.

The Centers for Disease Control (CDC) currently estimates that a jaw-dropping 33 percent of US men, and 39 percent of US women, will develop diabetes at some point in their lives (1). Roughly one out of three people in this country will develop diabetes, and those who don't manage it effectively will suffer debilitating health consequences. Has the risk of developing diabetes always been so high, and if not, why is it increasing?

In the same issue of the Annals of Internal Medicine as the low-carb vs. low-fat study, appears another study that aims to partially address this question (2).

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Metabolic Effects of a Traditional Asian High-carbohydrate Diet

A recent study supports the notion that an 'ancestral diet' focused around high-starch agricultural foods can cultivate leanness and metabolic health.

John McDougall gave Christopher Gardner a hard time at the McDougall Advanced Study Weekend. Dr. Gardner conducts high-profile randomized controlled trials (RCTs) at Stanford to compare the effectiveness of a variety of diets for weight loss, cardiovascular and metabolic health. The "A to Z Study", in which Atkins, Zone, Ornish, and LEARN diets were pitted against one another for one year, is one of his best-known trials (1).

Dr. McDougall asked a simple question: why haven't these trials evaluated the diet that has sustained the large majority of the world's population for the last several thousand years? This is an agriculturalist or horticulturalist diet based around starchy foods such as grains, tubers, legumes, and plantains, and containing little fat or animal foods. Researchers have studied a number of cultures eating this way, and have usually found them to be lean, with good cardiovascular and metabolic health. Why not devote resources to studying this time-tested ancestral diet? I think it's a fair question.

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Help Advance Diabetes Research

A University of Virginia researcher named Hannah Menefee contacted me recently to ask for our help.  She and her colleagues are conducting a study on how people with type 2 diabetes use Facebook to manage their health, and how that technology can be leveraged to support effective health communication.

If you have type 2 diabetes, and you'd like to participate in the study, please join their Diabetes Management Study Facebook group.  There, you'll receive more information about the study, you'll receive a short survey, and you may be invited into one of the study phases.

Does "Metabolically Healthy Obesity" Exist?

Obesity is strongly associated with metabolic alterations and negative health outcomes including diabetes, cardiovascular disease, and some types of cancer (1, 2, 3, 4). Excess body fat is one of the primary causes of preventable health problems and mortality in the United States and many other affluent nations, ranking in importance with cigarette smoking and physical inactivity. Obesity is thought to contribute to disease via the metabolic disturbances it causes, including excess glucose and lipids in the circulation, dysregulated hormone activity including insulin and leptin, and inflammatory effects. This immediately raises two questions:

1. Does metabolically healthy obesity exist?
2. If so, are metabolically healthy obese people at an elevated risk of disease and death?

Does metabolically healthy obesity exist?

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Neuronal Control of Appetite, Metabolism and Weight

Last week, I attended a Keystone conference, "Neuronal Control of Appetite, Metabolism and Weight", in Banff. Keystone conferences are small, focused meetings that tend to attract high quality science. This particular conference centered around my own professional research interests, and it was incredibly informative. This post is a summary of some of the most salient points.

Rapid Pace of Scientific Progress

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