High Blood Pressure and Magnesium
Magnesium is not a mineral that tops discussions very often; however, magnesium is critical to over 300 bodily functions. Magnesium maintains normal muscle and nerve function, helps regulate blood sugar levels, promotes normal blood pressure and heart rhythm, maintains bone strength, and supports a healthy immune system.
Many people consume a diet low in magnesium receiving less than two-thirds of the recommended dietary allowance. Good magnesium sources include whole grains, spinach, broccoli, squash, beans, popcorn, nuts, pork, and seeds. Fair sources of magnesium include dairy products, chocolate, and meats.
A magnesium deficiency takes a long time to develop. Magnesium deficiency symptoms include irregular heartbeat, weakness, fatigue, numbness, muscle pain, disorientation, and seizures. Conditions related to increased risk for magnesium deficiency include alcoholism, poorly controlled diabetes, intestinal disorders (Crohn’s disease), and intake of certain medications (diuretics). Sup-optimal levels of magnesium intake have been linked with diabetes, hypertension, osteoporosis, and pregnancy discomfort.
When someone has type II diabetes they are making adequate insulin levels. The problem with type II diabetes is that the cells do not recognize the insulin. When cells do not recognize insulin they do not let sugar from the blood enter the cell and blood sugar levels remain elevated. This leads to sugar spilling over into the urine, organ damage, and other complications. Magnesium is a factor in this because it’s the “key” that opens the door for insulin to get into the cell. If magnesium levels are low there are no keys to open the door and insulin is unable to do its job resulting in continued high blood sugar levels. When diabetes is poorly controlled the loss of magnesium in the urine is even greater.
Blood levels of potassium, calcium, and magnesium are closely connected and all influence blood pressure. Studies have linked low magnesium levels with elevated blood pressure. As an aside, if you have ever been told to eat a banana by your doctor, you should also increase your magnesium intake. FYI – Bananas are not the best source of potassium – potatoes are!
Magnesium is a major component of the matrix (middle) of bones. Low magnesium levels cause fragile bones that are less flexible and have a slower recovery rate if injured.
Adequate levels of magnesium are related to decreased leg cramps during pregnancy. A magnesium deficiency is also a risk factor for gestational diabetes.
Recommended Dietary Allowances (RDA) for Magnesium:
Men 350 mg per day
Women 280 mg
Pregnancy 300 mg
Lactation 355 mg first 6 months; 340 mg next 6 months
You do NOT want to take megadoses of magnesium – more is not better in this case. You just want enough to meet the RDA. If you feel your intake of magnesium from foods is low, taking a basic multivitamin is a simple way to ensure you meet your needs. Read the multivitamin label carefully because not all multivitamins include magnesium. Always check with your doctor before altering your medications or supplements.
Magnesium may not be an exciting mineral, but it is critical. Ensure you are eating adequate sources of magnesium rich foods and/or consider a supplement to promote optimum health.
February is American Heart Month. In recognition of American Heart Month you can access Heart Health Made Easy at a 25% savings. Learn more about this take action guide to lower cholesterol and blood pressure at http://www.hearthealthmadeeasy.com.
Blood Pressure and Cholesterol – The Affect of Personality and Panic Attacks
Lisa Nelson RD: What role does personality play in a person’s heart disease risk? Does temperament have a direct affect on cholesterol levels or blood pressure?
Dr. Shelby-Lane: Temperament and personality have a definite effect on blood pressure and on heart disease. This is a great question and it has been studied by the experts, as you will note in the following excerpts. Heart disease consists of congenital abnormalities, arrhythmias, lipid abnormalities acquired and congenital, functional and physiologic problems, risk factors such as diabetes and metabolic syndrome, structural disease and valvular problems, heart failure, acquired disease such as coronary artery disuse, and infectious diseases along with diseases related to blood vessel structure. Again, anxiety, stress, and stress related disorders can have an effect on major hormones, heart rate and heart health and heart disease. Nutritional abnormalities can also affect heart performance.
New research suggests that people who suffer from panic attacks are at increased risk of developing heart disease.
Dr Kate Walters and colleagues at University College London examined medical records of more than 400,000 people, including 57,615 who had been diagnosed with panic attacks. Results showed that people who were younger than 50 when they were first diagnosed with panic attack were 38% more likely to have a heart attack and 44% more likely to develop heart disease than those without the condition. Those who were older than 50 at the time of diagnosis did not have an increased risk of heart attack, but were 11% more likely to develop heart disease than those without the condition.
Intriguingly, the results also showed that while panic attack sufferers were at increased risk of developing heart disease, they were seemingly less likely to die from it.
Why people who suffer from panic attacks should be at increased risk of developing heart disease is unclear. According to the study, authors put forward several theories, one being that panic disorders might trigger nervous system changes which could promote the clogging of arteries. Another theory is that people may have been misdiagnosed as having panic attacks when they actually have coronary heart disease. “Clinicians should be vigilant for this possibility when diagnosing and treating people presenting with symptoms of panic,” said Dr Walters.
Walters K, Rait G, Petersen I, Williams R, Nazareth I. Panic disorder and risk of new onset coronary heart disease, acute myocardial infarction, and cardiac mortality: cohort study using the general practice research database. European Heart Journal. 2008;29:2981-2988. doi:10.1093/eurheartj/ehn477.
News release: Panic attacks linked to higher risk of heart attacks and heart disease, especially in younger people. European Society of Cardiology. December 10th 2008.
Study results have shown that people with depression are at increased risk of heart attack and heart failure because they are less likely to be active.
Scientists have known for some years that people who are depressed are at increased risk of heart attack and other cardiac events, however the reason why this should be has remained unclear. However, according to results of a study by Mary A Wooley and colleagues, the increased risk is due to behavioral factors.
The researchers analyzed data obtained from 1,017 people with heart disease, 199 of which had symptoms of depression. Results showed that 10% of depressed participants had a cardiac event (e.g. heart attack, heart failure, stroke, transient ischemic attack) during the study period, compared to just 6.7% of non-depressed participants, meaning that depressed participants were 50% more likely to have a cardiac event. However, results also showed that depressed participants were more likely to smoke, were less likely to take their medications as prescribed, and were less physically active. After the researchers factored these behaviors into their calculations the risk of a cardiac event in depressed participants was similar to that in non-depressed participants.
The researchers concluded: “These findings raise the hypothesis that the increased risk of cardiovascular events associated with depression could potentially be preventable with behavior modification, especially exercise.” Adding: “Exercise training can improve both depressive symptoms and markers for cardiovascular risk.”
Whooley MA, de Jonge P, Vittinghoff E, et al. Depressive symptoms, health behaviors, and risk of cardiovascular events in patients with coronary heart disease. JAMA 2008;300:2379-2388.
February is American Heart Month. In recognition of American Heart Month you can access Heart Health Made Easy at a 25% savings. Learn more about this take action guide to lower cholesterol and blood pressure at http://www.hearthealthmadeeasy.com.
All the best,
Lisa Nelson RD
Be Heart Healthy and Lose Weight
How to Lower Cholesterol: Step 3
In the last post I gave you the first step towards lowering cholesterol. Here is the third. Remember, by implementing these basic steps, you’re establishing a solid foundation that will support heart health and increase the effectiveness of medications and supplements.
Step 3: Lose weight and/or maintain a healthy weight.
Weight has a significant impact on your heart health and cholesterol levels. Weight loss alone may lower triglycerides, LDL cholesterol, and total cholesterol levels. Losing as little as 10% body weight could drop your cholesterol back to the heart healthy range.
February is American Heart Month. In recognition of American Heart Month you can access Heart Health Made Easy at a 25% savings. Learn more about this take action guide to lower cholesterol and blood pressure at http://www.hearthealthmadeeasy.com.
Lower Cholesterol: Step 1
Lower Cholesterol: Step 2
All the best,
Lisa Nelson RD
Heart Health and Weight Loss – Do you need to eat fat to lose belly fat?
I enjoy the show The Biggest Loser. On one of the episodes this season they had an individual from Prevention magazine share some tips based on the “Flat Belly” diet. I was very excited because it sounded like a link had been found between the Mediterranean diet and reduced abdominal obesity. Hence, the reason for this article!
The Mediterranean diet contains an increased level of monounsaturated fat compared to the typical American diet. Monounsaturated fat is a type of heart healthy unsaturated fat. One of the best monounsaturated fat sources is olive oil. I went to work researching to find scientific evidence to support a link between a diet high in monounsaturated fat and reduced belly fat.
Here’s the main study supporting the connection between decreased abdominal obesity and monounsaturated fats.
Study: Published in the Diabetes Care back in 2007 by J.A. Paniagua, MD, PHD, A. Gallego de la Sacristana, MD, I. Romero, PHD, A. Vidal-Puig, MD, PHD, J.M. Latre, MD, PHD, E. Sanchez, MD, P. Perez-Martinez, MD, PHD, J. Lopez-Miranda, MD, PHD and F. Perez-Jimenez, MD, PHD
Monounsaturated Fat-Rich Diet Prevents Central Body Fat Distribution and Decreases Postprandial Adiponectin Expression Induced by a Carbohydrate-Rich Diet in Insulin-Resistant Subjects
The purpose of this study was to show that central obesity is linked with insulin resistance (when the body does not respond normally to insulin) and studied the effect of three different diets with the same level of calories on fat distribution, insulin sensitivity, and peripheral adiponectin (fat hormone) gene expression. The study included 11 individuals that were considered insulin resistant. Everyone in the study spent 28 days on each of the following diets: 1. diet enriched in saturated fat, 2. diet rich in monounsaturated fat, 3. diet rich in carbohydrates.
The study found weight, body composition, and metabolism unchanged during all three diets. On a high carbohydrate diet, fat tended to be redistributed to the abdominal area versus the high fat diets.
There have been many studies conducted on this theory, but the results are all conflicting.
Expert Opinion
1. Not enough evidence to support a connection.
This was a fairly small study of only eleven individuals. A study on 62 women published in the Journal of Nutrition in 2004 did not find a link between a diet high in monounsaturated fat and changed body fat distribution. There needs to be more large scale studies that conclusively establish a link before we can jump on the bandwagon.
2. Follow a Mediterranean Diet anyway!
Whether or not a Mediterranean Diet targets belly fat or not, the benefits of this type of diet are well known when it comes to heart health and weight loss.
Those that follow a Mediterranean Diet have a reduced risk of developing heart disease and dying from a heart attack. Even those that have survived a heart attack and lived to adopt the Mediterranean Diet significantly reduce their risk of a second heart attack and other complications.
Also, those that follow the Mediterranean diet have increased satiety (feelings of fullness) due to the adequate fat and fiber content. This means a decreased urge to overeat which promotes weight loss.
Characteristics common to a Mediterranean Diet include:
Consume high intake of fruits and vegetables
Select whole grains
Consume healthy fats (canola and olive oil)
Eat nuts in moderation
Low red wine consumption
Limit eggs to less than 4 times per week
Consume little red meat
Eat fish regularly
If you adopt this style of eating now and some conclusive evidence comes out in the future supporting a link with decreased belly fat, it won’t matter. You’ll already be lean with a healthy heart!
Receive heart health and weight loss tips from dietitian Lisa Nelson when you subscribe to The Heart of Health ezine at https://www.lisanelsonrd.com/hearthealth.html. You can select from the free e-courses How to Lower Cholesterol in 8 Simple Steps or 7 Natural Ways to Lower Blood Pressure when you subscribe.
Heart Disease and Fibromyalgia – Is there a link?
Here’s another question I asked Dr. Cynthia Shelby-Lane and her answer.
Lisa Nelson RD: Do you feel there is a link between heart disease and fibromyalgia?
Dr. Shelby-Lane: Fibromyalgia symptoms were akin to the symptoms of several “functional” disorders (i.e., medical conditions that affect bodily function via causes that are poorly understood) including recurrent non-heart-related chest pain, heartburn, heart palpitations and irritable bowel syndrome. However, a number of studies since have detected evidence of abnormalities in the internal organs of many fibromyalgia patients, including heart valve problems, malfunction of the muscles that move food to the stomach, and weakened lung function. These studies suggest that the abnormalities likely are symptoms of a larger disease, not illnesses by themselves.
Because of weakened respiratory muscles an individual finds it hard to breathe and the supply of oxygen to heart is decreased resulting in the above symptoms. Similar is the case with neck pain, due to weakened muscles.
Fibromyalgia (FM) is a recently recognized disorder rheumatologists and practitioners see quite often, especially in women 20 to 50 years old. It is characterized by widespread, chronic musculoskeletal pain, tenderness, fatigue and stiffness affecting muscles, tendons, ligaments and connective tissues with loss of sleep, depression, and shortness of breath. It is a poorly understood condition and there appears to be no universal cause and no single treatment that is effective for every person. Diagnosis of fibromyalgia is based on the tenderness of specific anatomical sites (at least 11 of 18 points) and pain in all four quadrants of the body that has lasted for 3-6 months or longer. It mostly affects the neck, shoulders, lower back, chest and/or thighs. Fibromyalgia patients meet many of the diagnostic criteria for chronic fatigue syndrome. Three to six million people are affected by fibromyalgia.
Possible Causes or Contributing Factors of Fatigue & Fibromyalgia
The cause of fibromyalgia is not known. Patients experience pain in response to stimuli that are normally not perceived as painful. Researchers have found elevated levels of a nerve chemical signal, called substance P, and nerve growth factor in the spinal fluid of fibromyalgia patients. The brain nerve chemical serotonin is also relatively low in patients with fibromyalgia. Studies of pain in fibromyalgia have suggested that the central nervous system (brain) may be somehow supersensitive. Scientists note that there seems to be a diffuse disturbance of pain perception in patients with fibromyalgia.
Also, patients with fibromyalgia have impaired non-Rapid-Eye-Movement, or non-REM, sleep phase (which likely explains the common feature of waking up fatigued and unrefreshed in these patients). The onset of fibromyalgia has been associated with psychological distress, trauma, and infection.
Fibromyalgia can occur in the presence of other conditions such as rheumatoid arthritis, osteoarthritis and hypothyroidism.
Nutritional therapies that help with fibromyalgia are D-ribose, L carnitine, magnesium, coenzyme Q 10, glutamine, fixated nitrogen, SAMe (optimal dosages vary for all supplements) and detoxification, but detection and correction of the underlying problem is the first course of action. This should also include hormone evaluation for adrenal and thyroid problems.
All the best,
Lisa Nelson RD
Be Heart Healthy and Lose Weight
Would you like to ask Dr. Cynthia Shelby-Lane, heart health expert, a question?
Dr. Cynthia Shelby-Lane, MD
Well, now’s your chance! I will be interviewing Dr. Cynthia Shelby-Lane later this month. I want to ask the questions you want answers to. Submit your questions by commenting on this post below.
Here’s a little background information on Dr. Shelby-Lane. She’s known as the “agelessdoctor” with a private practice located in Detroit, Michigan – Elan Anti-Aging & Longevity Center of Michigan. After 23 years as an emergency room physician, her experience with life and death crises made her realize the limitations of traditional medicine. She became a board certified anti-aging specialist with a holistic approach to medicine, integrating traditional and complimentary strategies to treat and prevent disease. Dr. Shelby-Lane has recently expanded her practice to the internet and answers questions for patients around the world, providing alternative solutions and second opinions.
Dr. Shelby-Lane’s knowledge is extensive and has led to positions with numerous state and national medical boards, including two terms as President of the American Association of Women Emergency Physicians. Her areas of expertise include cardiovascular disease prevention, bio-identical hormone replacement therapy, detoxification, adrenal and thyroid disorders, weight management, memory and brain health, autoimmune disorders and fibromyalgia.
In a unique twist, Dr. Shelby-Lane not only graduated from the University of Michigan Medical School, but also the Second City Comedy School in Chicago. She’s a firm believer that laughter is good medicine and I have to agree. She’s produced her own comedy show titled “Laugh Attack: Stopping the # 1 Killer – Heart Disease” and delivers a powerful lecture called “Heart Sense & Humor”. You can join her live via satellite radio on February 4th as she discusses heart disease and her upcoming book release.
The list of Dr. Shelby-Lane’s accomplishments is endless (including being a guest on Oprah – more than once!). The above is just a quick synopsis of the ones I thought you’d find most interesting related to heart disease.
Make the most of Dr. Shelby-Lane’s generous offer to carve time out of her busy schedule to answer your questions.
Comment on this post to submit your questions.
This interview will be posted in February as a special feature to recognize “American Heart Month”. So, watch for the answers to your questions next month! Until then, I’d love to have you join the hundreds of people reading The Heart of Health ezine where I provide free heart health and weight loss tips. Subscribers also receive the free report “Stop Wasting Money – Take Control of Your Health” or the free e-course “How to Lower Cholesterol in 8 Simple Steps”.
