Disease Proof : Disease Proof : Health & Nutrition News & Commentary : Dr. Joel Fuhrman

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Three recent studies document that consumption of processed foods increase odds of depression, and not only that, but those high protein, high fat diets (high in animal products) are also linked with more depression. The diet to protect against depression – that is simple, a high nutrient, plant-based diet outlined in my books, Eat for Health and Eat to Live. 

In one study, middle-aged subjects were categorized by their dietary patterns based on how much “whole” or “processed” food they consumed. The high processed foods group was characterized by high intake of sweetened desserts, fried food, processed meat, refined grains, and high-fat dairy products. Five years later, the researchers evaluated how many of the subjects had reported depression symptoms.

Subjects who ate the most whole foods had the lowest odds of depression, and those who ate the most processed foods had the highest odds of depression – 60% increased odds compared to those who ate the least amount of processed foods.¹

Another study compared the effects of low-fat plant-based diet and low-carbohydrate animal-product-rich diet on mood in overweight women. Although both groups lost similar amounts of weight over one year, measures of mental health and mood only improved in the low-fat group. The low-carb dieters eating more fat and animal products had higher depression scores. The authors also cited previous human studies in which high protein, low-carbohydrate diets have resulted in cognitive impairment.²

A third study measured scores of depression before and after removing meat, poultry, and fish from subjects normally eating a typical American diet. Indicators of depression significantly decreased after removing all the animal products and shifting to a plant-based diet for 2 weeks. ³

Nutrition is crucial for regulating mood – high oxidative stress in the brain and low levels of several micronutrients have also been linked to depression.⁴  

These studies are a reminder that what we eat affects not only our physical health but our mental health as well. Combine great diet with light therapy, exercise, sufficient Vitamin D and the right fatty acid balance for the brain, and you have my protocol to beat depression. 

References:

1. Akbaraly TN et al. Dietary pattern and depressive symptoms in middle age. Br J Psychiatry. 2009 Nov;195(5):408-13.

2. Brinkworth et al. Long-term Effects of a Very Low-Carbohydrate Diet

and a Low-Fat Diet on Mood and Cognitive Function. Arch Intern Med. 2009;169(20):1873-1880

3. Beezhold BL et al. Preliminary evidence that vegetarian diet improves mood. American Public Health Association 2009 National Meeting, Abstract 206464. 

4. Leung BM, Kaplan BJ. Perinatal depression: prevalence, risks, and the nutrition link--a review of the literature. J Am Diet Assoc. 2009 Sep;109(9):1566-75.

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Preface:  Over the next year or two, I'll be following the weight loss journey of Stephanie, age 39, who is 200% committed to getting her health back.  Her husband died recently and she’s currently raising four young children under the ages of nine, plus attending nursing school.  Stephanie has courageously volunteered to share her thoughts and medical stats with DiseaseProof readers as she undertakes the journey to optimal health.  Welcome Stephanie!

Why have you chosen to commit to nutritarian eating?  I currently weigh 398 lbs (5’10”) and I’m tired all the time.  I cry a lot and get easily irritated and aggravated.  My knees hurt, I have constant headaches and acid reflux.  My local doctor feels that I’m unable to lose weight on my own and is urging me to have gastric bypass surgery.  I want to play at the park, ride bikes and be a fit and healthy mother for my children.  Most importantly, I want to BE HERE for them.

What are some of the events in your life that have led you to this point?  I’ve been overweight my entire life, but have steadily added more pounds each year; especially after having babies.  Last year my husband died after a battle with congestive heart failure and a failed heart transplant.  In an instant, I became a 38-year-old widowed mother of four children ages eight to three, and the stress has been overwhelming.  During this past year I have been diagnosed with premature osteoarthritis in both knees, high blood pressure, ADHD, and major depression. 

Describe a typical day for you:  My alarm goes off at 6:45 am, but I hit the snooze button four times before I drag myself out of bed.  I struggle to pull myself together and prepare the kids’ breakfasts and get them off to school.  I plan my day by prioritizing how much energy and/or steps it will take to do an activity.  It’s difficult to do much with my children, because I’m unable to move fast due to my size. 

                                           I feel like I’m a prisoner in my own body. 

• Weight  398 lbs.
• BMI  57.1
• Blood pressure  140/100
• Waist measurement  58”
• Cholesterol  180
• Triglycerides  98
• HDL  48
• LDL  112
• Fasting blood sugar  87
• currently taking anti-depressants, amphetamines for ADHD, and medication for urinary incontinence

Stephanie’s “official” starting date is November 1,  2009, and I’ll be posting her progress updates the first week of every month.  We are cheering for Stephanie and wish her all the best as she takes this courageous step to get her health and life back!    

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Here’s more depressing vitamin D news. Writing in the Journal of Clinical Lipidology, scientists have determined insufficient vitamin D is associated with a 31% prevalence of metabolic syndrome, compared to only 10% for people with higher levels. I got Dr. Fuhrman's thoughts on this vitamin D mess.

What nobody considers in the metabolic syndrome (and overeating) issue is my overall message and mantra and that is that low-nutrient eating in general creates metabolic derangements leading to discomforts relievable by overeating.

This I have labeled toxic hunger. Toxic hunger or food addition has at its basis, low micronutrient intake. We have an exciting study we just completed documenting the changing perception of hunger with high-nutrient density diet and it is compelling.

In related news, lack of vitamin D has been linked to depression, difficulty thinking, high blood pressure and back pain. Luckily, Dr. Fuhrman’s Osteo–Sun can help keep your Vitamin D level within ideal range.

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Unless it’s a big bag of money, no one likes carrying around extra weight. Even cute little love handles can be bad.

And having too much abdominal fat has been linked to stroke and heart failure, but losing weight can work wonders.

A new study in the journal The Lancet Oncology claims women who underwent weight-loss surgery had a lower risk of cancer. Great news?

Losing weight is a fantastic idea, but weight-loss surgery is a bad idea. Dr. Fuhrman lists depression, malnutrition, gastritis and vitamin B12 deficiency, as potential side-effects of bariatric surgery.

Instead, try fruits and vegetables. Plant foods are low in calories and high in fiber, which means you can eat until you're stuffed, protect yourself against cancer and still lose weight!

Via Journal Watch.

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Omega-3 fatty acids, the good fats recently found to improve heart health and help prevent prostate cancer, are now being associated with lower bodyweight.

Published in the British Journal of Nutrition, scientists observed that overweight or obese people had blood levels of omega-3s roughly 1% lower than healthy people.

For the study, 124 people of varying bodyweights—21 were classified as healthy weight, 40 overweight and 63 obese—had blood samples taken, with results showing an inverse relationship between omega-3 levels and participants’ waist size and hip circumference.

Obese people had omega-3 levels of 4.53%, but healthy people had levels of 5.25%.

Sure, it’s only a small difference, but healthy bodyweight is just one perk of omega-3s. Other reports have shown omega-3 fatty acids offer protection from stroke, depression linked to pregnancy and help lower young children’s risk of type-1diabetes.

Good sources of omega-3 include flaxseed, walnuts and micro algae-derived supplements.

Via Food Navigator.

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The Centers for Disease Control and Prevention estimates 5.4% of adults in the United States suffer from depression. In the past, vitamin D deficiency had been linked to depression, but are there any nutritional reasons why? Here’s a quick discussion from Dr. Fuhrman’s member center:

Question: Are their any diet reasons that contribute to depression? The reason I ask is that some days I feel really good and the next day I feel tired and depressed. I am not eating totally healthy. Also, what kind of blood tests should I have to tell if I am low in nutrients that may be causing my depression?

Dr. Fuhrman: Yes, oxidative stress in general, which means low intake of the broad spectrum of plant-derived phytochemicals, can contribute to depression. Vitamin D deficiency and omega-3 deficiencies can also contribute. You should order the following tests: amino acid quantitative, essential fatty acid analysis, B12/ MMA methylmalonic acid, Thyroid Stimulating Hormone (TSH), and Vitamin D 25-hydroxy.

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Speaking at this year’s The Endocrine Society's annual meeting, scientists say bone fracture rate is higher among people who have underwent bariatric surgery. Researchers studied 90 people who had either vertical banded gastroplasty or biliopancreatic diversion. Seven years following their operation, 21 participants endured a total of 31 fractures. The risk for hand and foot fractures was the most elevated; Reuters explains.

Interestingly enough, in 2008 experts determined gastric bypass surgery caused bone loss, citing vitamin D and calcium deficiencies in individuals undergoing the procedure. Dr. Fuhrman lists depression and malnutrition as other harmful side-effects of weight-loss surgery.

Another report found people who underwent gastric surgery have a higher rate of suicide than the general population, but experts argue the surgery is not the reason why.

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More kudos for vitamin D! A new study in the journal Arthritis & Rheumatism claims insufficient vitamin D may cause cartilage loss in knee joints. For the study, involving 880 men and women, ages 51 to 79, scientists measured blood levels of vitamin D and knee cartilage volume. And 3 years later, retesting of 353 people revealed 58% had changes in knee cartilage and worsening osteoarthritis, both men and women with low vitamin D had less knee cartilage; Reuters reports.

Vitamin D is strong medicine and we get vitamin D from the sun’s ultraviolet rays. Vitamin D functions as a hormone, telling our intestines to absorb calcium and phosphorus, which builds strong bones and prevents things like rickets, depression and even difficulty thinking!

In his DVD Osteoporosis Protection for Life, Dr. Fuhrman explains why vitamin D is so critical, the importance of proper diet and he demonstrates a number of bone strengthening exercises.

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Evolving from hulking apes to car driving suburbanites isn’t all it’s cracked up to be. Some health officials claim that America’s love for driving is a bad habit, resulting in poor health. Driving more means you walk less and walking is a great exercise. Walking is something us bipedal hominids are specialized to do. Experts say people should take about 10,000 steps a day to maintain good health, but driving a car all day causes that number to drop to about 1,000; Reuters explains.

I drive my friends crazy. I always park far away. So I can walk a little. But listen, exercise is very important. According to Dr. Fuhrman, regular exercise pays huge dividends, such improving mood, building stronger bones and reducing risk of disease, like type-2 diabetes.

In related news, walking for 30 minutes each day was found to reduce age-related weight gain and taking the stairs helps lowers lower blood pressure and cholesterol.

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Certainly a plant-based diet which minimizes animal products is the best approach for losing weight, preventing and reversing disease, and optimizing health. However, those following a vegetarian or vegan diet, and those not consuming fatty fish like salmon each week, should be aware of recent studies that suggest they may be deficient in a critical and essential nutrient, especially EPA & DHA, the long-chain omega-3 fatty acids.

Alpha-linolenic acid (ALA) is an omega-3 fat and is the precursor of the longer chain omega 3 fats eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). EPA and to a lesser extent DHA can be made in the body from ALA. Primary sources of these fatty acids are certain fish and seafood.

As a result, vegetarian, and especially vegan, diets provide little EPA and DHA directly. A recent study reviewed the varying dietary fat intake across vegetarians, vegans, omnivores, and semi omnivores and its impact on essential omega-3 fatty acid availability in tissues. It concluded that vegetarians were left with reduced levels of omega-3 and recommended that they consume additional direct sources of EPA and DHA, regardless of age or gender, for physical, mental and neurological health benefits.1

In addition, ALA, EPA, and DHA are especially important for the prevention of certain cancers, particularly those of the breast and colon, and possibly of the uterus and the skin, and are likely to reduce the risk of postpartum depression, manic-depressive psychosis, dementias, Parkinson's, hypertension, toxemia, diabetes, and to a certain extent, age-related macular degeneration.2

Although vegetarian diets are generally lower in total fat, saturated fat, and cholesterol than are non-vegetarian diets and may appear to offer cardiovascular health benefits due to higher intakes of antioxidants and fiber, the lack of direct EPA or DHA dietary sources may cause an adverse effect.3,4

With all of this documented research, it is not surprising that when I draw blood for fatty acid analysis on many of my patients, I find that a large percentage of individuals who do not eat fish or seafood regularly do not have optimal levels of DHA, even those eating walnuts and flaxseeds on a regular basis. I often see patients eating otherwise excellent diets with itchy dry skin, seborrheac dermatitis and other signs of DHA deficiency.

Although, there are some vegans and vegetarians regularly consuming walnuts and flaxseeds (which supply adequate ALA) may produce enough DHA on their own and may not require supplementation. However, because this issue is so imperative to their health it should be confirmed with a blood test before assuming that the conversion level is adequate. In order to assure optimal production of DHA fat, without recommending that the consumption of fish or refined fish oils, I recommend taking a vegetable sourced DHA supplement. DHA alone can deliver the same benefits of fish oil, since the intake of DHA can cause a natural retro-conversion to EPA internally.

Laboratory cultivated DHA is made from microalgae and is a pure form of DHA without environmental contamination. It is grown in the laboratory, not collected in the wild. It has no mercury or other toxins, which is a concern even for non-vegans who are cautious about eating fish or seafood.

DHA has been shown to protect against dementia, depression, inflammatory diseases, attention deficit and hyperactivity disorder (ADHD), allergies, and to offer significant benefits for overall cardiovascular health.

There are other problems with consuming fish oils. The main problem is that the fat turns rancid as it sits on store shelves. As a result, many people complain of burping, indigestion, a foul taste, and long lasting fish-breath. I have also observed that rancidity of this fish fat can place a stress on the liver. Patients of mine have had blood tests showing abnormal liver function when consuming fish oil in significant amounts and then have had these tests return to normal when the fish oils were stopped.

Fortunately, vegetable derived DHA, from microalgae, is an alternative. However, even algae derived DHA can become rancid if not cared for properly. We go through great lengths to deliver the purest and freshest DHA product available on the market today. My DHA Purity is manufactured under strict conditions to ensure purity. Every step of the way, from production to packaging, transportation and storage, this product is kept refrigerated and handled to ensure optimal freshness.

In conjunction with a high nutrient, plant-based diet, I advise all people take a daily DHA supplement from a clean source. Early in life, DHA is supplied via the placenta and from breast milk. While adequate DHA is particularly important for pregnant and nursing women and young children, it is beneficial for all ages!

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