Showing posts with label md. Show all posts
Showing posts with label md. Show all posts

Saturday, August 1, 2015

12 Tips for Healthy Weight Loss… with Benefits Beyond the Scale


By Michelle McMacken, M.D.  

(In case you missed it, here is Michelle on the recent RRP)

As an internal medicine physician and director of an obesity program, I am all too familiar with the struggle that many people face when it comes to weight loss. The statistics in my primary care practice mirror the U.S. national numbers: more than 70% of us are overweight or obese.[i] I’ve seen many people attempt to lose weight, become frustrated and disheartened, and turn to supplements, pills, meal replacements, unhealthy fad diets, and surgery. Unfortunately, most of these are short-term solutions without long-term weight-loss benefits (often accompanied by troubling health consequences).



The mechanisms that regulate our body weight are highly complex – neurologic, genetic, hormonal, environmental, social, and even microbiologic factors are at play. But these factors do not necessarily determine our destiny! We have the power to override them with the food and lifestyle choices we make every day.

Here are twelve of my favorite weight-loss tips:

1.   Start “crowding out” animal products, high-fat foods, and processed foods.
Gradually add more whole plant foods to your diet. You can begin with plant foods you already like and build from there. Eat a whole plant food (such as a piece of fruit) or a dish made from whole plants (such as a vegetable or bean soup or a salad) before one of your usual meals, so that you won’t have as much room for the less-healthful foods.
If you are ready to make the full leap to a whole-food, plant-based diet, you will likely see benefits even faster. Consider trying one of the many plant-based/vegan “kickstart” programs available online or in print.

2.   Focus on the positive—the nutrient-dense, high-fiber foods you are adding to your diet—instead of what you are taking away.
Enjoy experiencing new flavors (this is what I call “taste-bud rehab”), rather than focusing your mental energy on the unhealthy foods you are trying to remove from your diet.

3.   Choose the right kind of carbs!
Avoid processed carbs, such as white bread, white rice, and white pastas, even if they are vegan/plant-based. Stick to whole plant foods in their most natural form—brown or wild rice, quinoa, barley, oats, sweet potatoes, beans, lentils, and of course, an abundance of colorful vegetables and fruits.

4.   Remember that oil is a processed food.
Oil is very dense in calories, so it can easily sabotage your weight-loss efforts. Oil-based salad dressings, for example, dramatically increase the calories in a salad.

5.   Avoid liquid calories.
Don’t drink your calories, especially in the form of sports drinks, sodas, other sweetened beverages, and alcohol. The calories in these drinks add up fast and don’t fill you up. And for weight loss, in my experience, eating whole fruit trumps drinking fruit juice. Water is the only beverage we actually need.

6.   Have conversations with your family and/or close friends.
Talk to the people you live with about how they can best support your weight-loss efforts. Many of us have cravings for certain junk foods and/or sugary desserts, and when these items are readily available in the kitchen, it’s pretty challenging to resist them. Ideally, family members should be on board with not bringing these foods into your house. In my practice, I encourage my patients to bring their partners and other family members to their appointments with them, so we can talk about behavior changes together.

7.   Track positive behaviors (such as taking a walk at lunch, trying a new vegetable, or avoiding a sugary coffee beverage).
Keep track of the positives, so that you can look back and see the progress you are making. Many of these changes have important health benefits, independent of weight loss. Also, keep in mind that losing just 5% of your body weight can have significant health benefits if you are overweight or obese.

8.   Aim for at least 30 minutes of physical activity most days of the week.
Your daily activity can be as simple as walking. Although dietary changes tend to be more effective than exercise for weight loss, exercise is key to preventing weight regain and has numerous other health benefits.

9.   Eat as mindfully as you can.
Whenever possible, avoid reading or using technology (television, computer, phone, gaming, etc.) while eating. Savor each bite and focus on the experience of tasting your food.

10.  Be aware of your hunger cues.
Rate your hunger on a scale of 1 to 10, where 1 is very full and 10 is extremely hungry. Don’t let yourself get to a 9 or 10. This requires some planning. Eat something when your hunger level reaches 7 or 8, so that you won’t become ravenous later and make a desperate, unhealthy food decision.

11.  Don’t worry if you don’t lose weight right away.
The rate at which people lose weight depends on many factors, including activity level, age, muscle mass, health conditions and medications, and of course caloric intake. I don’t encourage setting goals around the rate of weight loss. Rather, focus on behavior and health goals, such as cooking at home more often, eating more servings of whole plant foods, and increasing physical activity. For most people, this approach will result in safe and sustainable weight loss. I’m not a fan of fasting for weight loss, meal replacement programs, weight-loss pills/supplements, or other practices that are not durable and do not promote long-term health.

12.   What if you are already eating plant-based but not losing weight?
Examine whether you are eating refined carbohydrates and other processed foods on a regular basis. Look out for added oils and sugars in your food. Are you eating out at restaurants and/or getting take-out regularly? These meals tend to be much higher in calories than similar meals prepared at home. Finally, consider reducing portions of calorie-dense foods such as dried fruits, nuts, olives, seeds, and avocados.

So what is the best way to eat for weight loss and overall health?
We’ve known for a long time, from large-scale observational studies, that vegetarians and vegans consistently have lower body mass indexes and significantly lower rates of obesity compared with omnivores.[ii],[iii],[iv],[v],[vi] Research also shows that animal products are linked to weight gain[vii],[viii],[ix],[x],[xi],[xii] and that plant-based diets are effective for weight loss, [xiii],[xiv],[xv],[xvi] without calorie counting or measuring portions. [v],[xv],[xvi] This is likely due in part to the high fiber content, which promotes satiety without excess calories.

Research aside, thousands of personal anecdotal reports and years of clinical experience attest to the fact that people who begin following a whole-food, plant-based diet almost always lose weight, and sometimes dramatically!

Probably the most important benefit of following a plant-based diet for weight loss is that it also decreases the risk of heart disease, high blood pressure, high cholesterol, diabetes, dementia, certain cancers, and even death.[xvii],[xviii] I know of no other “weight-loss diet” that can make such a claim. As a physician, I don’t think we should be separating weight issues from other health risks. I question the wisdom of following a diet (high-protein, low-carb, for example) that might help you lose weight in the short term but increases your chance of having significant health problems later on.



Michelle McMacken, M.D., is a board-certified internal medicine physician and an assistant professor of medicine at NYU School of Medicine.  She practices primary care at Bellevue Hospital Center in New York City, where she also directs a medical weight-loss program.  An enthusiastic supporter of plant-based nutrition, she is committed to educating patients, medical students, and doctors about the power of healthy eating and lifestyle modification. Be sure to connect and follow Dr. McMacken on Twitter.




This article was previously published on Forks Over Knives.
  
Sources:
[i]Prevalence of Overweight, Obesity, and Extreme Obesity Among Adults: United States, 1960–1962 Through 2011–2012. 
[ii] Rizzo NS et al. Nutrient profiles of vegetarian and nonvegetarian dietary patterns. J Acad Nutr Diet 2013 Dec;113(12):1610–9.

[iii] Spencer EA et al. Diet and body mass index in 38 000 EPIC-Oxford meat-eaters, fish-eaters, vegetarians and vegans. Int J Obesity 2003;27:728–734.

[iv] Tonstad S et al. Type of vegetarian diet, body weight, and prevalence of type 2 diabetes. Diabetes Care 2009 May; 32(5): 791–796.

[v] Berkow SE et al. Vegetarian diets and weight status. Nutr Rev 2006 Apr;64(4):175–88.

[vi] Wang Y et al. Meat consumption is associated with obesity and central obesity among US adults. Int J Obes 2009 Jun;33(6):621–8.

[vii] Vergnaud AC et al. Meat consumption and prospective weight change in participants of the EPIC-PANACEA study. Am J Clin Nutr 2010;92:398–407.

[viii] Rosell M et al. Weight gain over 5 years in 21,966 meat-eating, fish-eating, vegetarian, and vegan men and women in EPIC-Oxford. Int J Obes 2006 Sep;30(9):1389–96.

[ix] Halkjær J et al. Intake of total, animal and plant protein and subsequent changes in weight or waist circumference in European men and women: the Diogenes project. Int J Obes 2011 Aug;35(8):1104–13.

[x] Hernández-Alonso P et al. High dietary protein intake is associated with an increased body weight and total death risk. Clin Nutr 2015 Apr 7. pii: S0261-5614(15)00091–6.

[xi] Vergnaud AC et al. Macronutrient composition of the diet and prospective weight change in participants of the EPIC-PANACEA study. PLoS ONE 2013;8:e57300

[xii] Vang A et al. Meats, processed meats, obesity, weight gain and occurrence of diabetes among adults: findings from Adventist Health Studies. Ann Nutr Metab 2008;52(2):96–104.

[xiii] Turner-McGrievy G et al. A two-year randomized weight loss trial comparing a vegan diet to a more moderate low-fat diet. Obesity 2007 Sep;15(9):2276–81.

[xiv] Turner-McGrievy GM et al. Comparative effectiveness of plant-based diets for weight loss: a randomized controlled trial of five different diets. Nutrition 2015 Feb;31(2):350–8.

[xv] Barnard ND. The effects of a low-fat, plant-based dietary intervention on body weight, metabolism, and insulin sensitivity. Am J Med 2005 Sep;118(9):991–7.

[xvi] Barnard ND et al. A systematic review and meta-analysis of changes in body weight in clinical trials of vegetarian diets. J Acad Nutr Diet 2015 Jun;115(6):954–69.

[xvii] Fraser GE. Vegetarian diets: what do we know of their effects on common chronic diseases? Am J Clin Nutr2009;89(suppl):1607S–12S.

[xviii] Tuso et al. Nutritional update for physicians: plant-based diets. Permanente Journal 2013;17(2):61–5.




As always the information presented in this blog is for educational purposes only. It should not be considered as specific medical, nutritional, lifestyle, or other health-related advice.

Wednesday, April 1, 2015

Top 5 Misconceptions About Food: A Doctor’s Daily Experience by Michelle McMacken, M.D.

As a primary care doctor, I spend my days taking care of patients with diabetes, high blood pressure, high cholesterol, heart disease, and obesity. I also see “healthy” patients whose eating habits are starting them on the road to a future filled with doctor’s appointments and hospital visits.


I enjoy reminding my patients that their fork can be more powerful than my prescription pad when it comes to preventing and reversing chronic diseases. This conversation usually uncovers some common misconceptions about food and nutrition. Here are five myths that I hear almost every day, among patients and colleagues alike:

1. “I need to eat more protein.”

Many people don’t realize that the average American consumes more than twice the Recommended Dietary Allowance (RDA) of protein, most of it from animal products. 1,2Unfortunately, animal-based proteins have been shown to promote faster growth, not only of normal cells but of cancer cells, and have been linked to a variety of cancers as well as heart disease, diabetes, Alzheimer’s disease, and kidney stones.3,4

Plant foods contain plenty of protein, and a whole-foods, plant-based diet actually provides exactly what’s recommended in terms of protein requirements – about 8-10% of total daily calories from protein.  This happens naturally when people eat a diet of diverse, whole plant foods – there is no need to count grams of protein!  And unlike animal proteins, plant proteins from whole foods are not associated with cancer or other chronic diseases.  In fact, these foods actually prevent many of the diseases we see today!

2. “I need to drink milk to have strong bones.”

Many people equate dairy with calcium, strong bones, and the prevention of osteoporosis (low bone density). Generations of advertising slogans have perpetuated this idea. However, dairy isn’t the answer here. Studies show that dairy products may actually increase the risk of fractures related to osteoporosis!5-7

The biological purpose of cow’s milk is to support the rapid growth of a calf. Humans have no nutritional or medical need to consume the milk of cows or any other nonhuman species. Cow’s milk has significant levels of female hormones, and usually contains antibiotics, pesticides, saturated fat, and cholesterol — substances that definitely do NOT do a body good! Dairy has been specifically linked with prostate, ovarian, and uterine cancer, as well as heart disease and early death.7-13

The best sources of calcium come from the earth, in foods such as kale, broccoli, bok choy, and Brussels sprouts. As a bonus, these vegetables are high in vitamin K, which is also important for strong bones. Beans may be an especially good source of calcium, because they are also high in phytates, antioxidant compounds that may enhance mineral absorption14 (despite common perception to the contrary) and thus protect bone density.15 Many brands of soy milk, almond milk, orange juice, and tofu are fortified with calcium and vitamin D, just as cow’s milk is artificially fortified with these nutrients. However, there is no need to specifically target calcium sources in the diet; a diverse, whole-foods, plant-based diet will provide all of the calcium you need.


3. “Chicken, turkey, fish, and eggs are healthy sources of protein.”

Chicken, turkey, fish, and eggs contain significant amounts of cholesterol and saturated fat, in many cases as much as beef,16 so they are not “heart healthy” foods. Plant-based sources of protein contain zero cholesterol and far less saturated fat. Chicken and turkey usually contain antibiotics, pesticides, and fecal contaminants, and have been associated with salmonella, staph, and other infectious disease outbreaks. Chicken, fish, and eggs have been associated with an increased risk of diabetes.17-25 Almost all fish contain mercury, which can cause neurologic and cognitive problems; many also contain polychlorinated biphenyls (PCBs), a toxin associated with cancer.16 And a recent study showed that eggs cause intestinal bacteria to make a substance called TMAO, which can trigger heart attacks and other cardiovascular events.26

Whole plant foods supply plenty of protein, and they don’t come packaged with cholesterol or high levels of saturated fat. Instead, their protein is bundled with fiber and many necessary nutrients! Great plant-based sources of protein include lentils, chickpeas, black beans, kidney beans, soybeans, and quinoa. Green vegetables such as spinach, collards, broccoli, and peas are also quite high in protein per calorie. But remember, it’s not necessary to seek out plant foods high in protein, since a varied whole-food, plant-based diet will naturally provide enough protein, without special effort.27

4. “I can’t eat carbs.”

Many people are mistakenly led to believe they should avoid carbohydrates, particularly for weight management and diabetes control. Instead, they focus on proteins — especially animal proteins — and fats. Sadly, this approach actually increases the risk of chronic disease and death,28-32 and it deprives people of the numerous nutrients found in carbohydrate-containing foods.
It is true, however, that not all carbohydrates are created equal. Refined, highly processed carbohydrates can raise triglycerides, promote weight gain, and drive up blood sugar. On the other hand, starches that come from whole grains bring fiber, essential fatty acids, B vitamins, zinc, and protein into our diets and provide an excellent source of energy. Beans, legumes, starchy vegetables, and fruits are other healthy carbohydrate sources. Balancing these foods with nonstarchy vegetables is an optimal way to eat for weight loss, diabetes control, and reversal of heart disease.

5. “Healthy food is too expensive.”

You don’t need to shop at a gourmet health food store to find nutritious foods. Actually, some of the healthiest foods are the least expensive, and they are readily available at most grocery stores and many local farmers’ markets. Beans, lentils, brown rice, and frozen vegetables are usually inexpensive, especially when bought dried and in bulk. (Organic fruits and vegetables can cost more, but eating nonorganic plant-based foods is still more nutritious than eating meat, chicken, fish, eggs, and dairy, organic or otherwise.)


Even when processed foods and animal products are sold cheaply, they are expensive in terms of the cost to your health. What you may save now, you could end up spending later in pharmacy co-payments and medical bills!

***

Michelle McMacken, M.D., is a board-certified internal medicine physician and an assistant professor of medicine at NYU School of Medicine.  She practices primary care at Bellevue Hospital Center in New York City, where she also directs a medical weight-loss program.  An enthusiastic supporter of plant-based nutrition, she is committed to educating patients, medical students, and doctors about the power of healthy eating and lifestyle modification. Be sure to connect and follow Dr. McMacken on Twitter.




This article was previously published on Forks Over Knives.

***

References:
1 Institute of Medicine. Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids. Washington, DC: National Academies Press; 2002.
2 Rizzo NS, Jaceldo-Siegl K, Sabate J et al. Nutrient profiles of vegetarian and nonvegetarian dietary patterns. J Acad Nutr Diet 2013; 113(12):1610-9.
3Campbell TC, Campbell TM. The China Study: Startling Implications for Diet, Weight Loss, and Long-Term Health. Dallas: BenBella Books; 2006.
4 Barnard NB, Weissinger R, Jaster BJ, et al. Nutrition Guide for Clinicians, First Edition. Washington, DC: Physicians Committee for Responsible Medicine; 2007.
5 U.S. Department of Health and Human Services. Bone Health and Osteoporosis: A Report of the Surgeon General. Rockville, MD: U.S. Department of Health and Human Services, Office of the Surgeon General; 2004.
6 Feskanich D, Willett WC, Colditz GA. Calcium, vitamin D, milk consumption, and hip fractures: a prospective study among postmenopausal women. Am J Clin Nutr 2003; 77:504-11.
7 Michaëlsson K, Wolk A, Langenskiöld S, et al. Milk intake and risk of mortality and fractures in women and men: cohort studies. British Medical Journal2014;349:g6015.
8 Qin LQ, Xu JY, Wang PY, et al. Milk consumption is a risk factor for prostate cancer: Meta-analysis of case-control studies. Nutr Cancer 2004; 48(1):22-7.
9 Qin LQ, Xu JY, Wang, PY, et al. Milk consumption is a risk factor for prostate cancer in Western countries: Evidence from cohort studies. Asia Pac J Clin Nutr 2007; 16(3):467-76.
10 Chan JM, Stampfer MJ, Ma J, et al. Dairy products, calcium, and prostate cancer risk in the Physicians’ Health Study. Presentation, American Association for Cancer Research, San Francisco, April 2000.
11 Chan JM, Stampfer MJ, Giovannucci E, et al. Plasma insulin-like growth factor-I and prostate cancer risk: a prospective study. Science 1998; 279:563-565.
12 Genkinger JM, Hunter DJ, Spiegelman D, et al. Dairy products and ovarian cancer: a pooled analysis of 12 cohort studies. Cancer Epidemiol Biomarkers Prev 2006; 15:364–72.
13 . Ganmaa D, Sato A. The possible role of female sex hormones in milk from pregnant cows in the development of breast, ovarian, and corpus uteri cancers. Med Hypotheses 2005; 65:1028–37.
14 http://nutritionfacts.org/video/phytates-for-the-prevention-of-osteoporosis/
15 López-González AA, Grases F, Monroy N, et al. Protective effect of myo-inositol hexaphosphate (phytate) on bone mass loss in postmenopausal women. Eur J Nutr 2013; 52(2):717-26.
16 Simon, D. Meatonomics. San Francisco, Conari Press, 2013.
17Li Y, Zhou C, Zhou X, et al. Egg consumption and risk of cardiovascular diseases and diabetes: a meta-analysis. Atherosclerosis 2013; 229(2):524-30.
18 Djoussé L, Gaziano JM, Buring JE, et al. Egg consumption and risk of type 2 diabetes in men and women. Diabetes Care 2009; 32(2):295-300.
19 Radzevičienė L1, Ostrauskas R. Egg consumption and the risk of type 2 diabetes mellitus: a case-control study. Public Health Nutr 2012; 15(8):1437-41.
20 Tonstad S, Butler T, Yan R, et al. Type of vegetarian diet, body weight, and prevalence of type 2 diabetes. Diabetes Care 2009; 32(5):791–6.
21 Chiu TH, Huang H, Chiu Y. Taiwanese vegetarians and omnivores: dietary composition, prevalence of diabetes and impaired fasting glucose. PLoS One 2014; 9(2):e88547.
22 van Nielen M, Feskens EJ, Mensink M. Dietary protein intake and incidence of type 2 diabetes in Europe: the EPIC-InterAct Case-Cohort Study. Diabetes Care 2014; 37(7):1854-62.
23 van Woudenbergh GJ, van Ballegooijen AJ, Kuijsten A, et al. Eating fish and risk of type 2 diabetes: a population-based, prospective follow-up study. Diabetes Care 2009; 32:2021–6.
24 Kaushik M, Mozaffarian D, Spiegelman D, et al. Long-chain omega-3 fatty acids, fish intake, and the risk of type 2 diabetes mellitus. Am J Clin Nutr 2009; 90:613–20.
25 Djoussé L, Gaziano JM, Buring JE, et al. Dietary omega-3 fatty acids and fish consumption and risk of type 2 diabetes. Am J Clin Nutr 2011; 93:143–50.
26 Tang WH, Wang Z, Levison BS. Intestinal microbial metabolism of phosphatidylcholine and cardiovascular risk. N Engl J Med 2013; 368(17):1575-84.
27 Young VR, Pellett PL. Plant proteins in relation to human protein and amino acid nutrition. Am J Clin Nutr 1994; 59 (suppl):1203S-1212S.
28 Larsson SC, Orsini N. Red meat and processed meat consumption and all-cause mortality: a meta-analysis. Am J Epidemiol 2014; 179(3):282-9.
29 Lagiou P, Sandin S, Lof M, et al. Low carbohydrate-high protein diet and incidence of cardiovascular diseases in Swedish women: prospective cohort study. British Medical Journal 2012; 344:e4026.
30 Fung TT, van Dam RM, Hankinson SE, et al. Low-carbohydrate diets and all-cause and cause-specific mortality: two cohort studies. Ann Intern Med 2010; 153(5):289-98.
31 Noto H, Goto A, Tsujimoto T, et al. Low-carbohydrate diets and all-cause mortality: a systematic review and meta-analysis of observational studies. PloS One 2013; 8(1):e55030.

32 de Koning L, Fung TT, Liao X, et al. Low-carbohydrate diet scores and risk of type 2 diabetes in men. Am J Clin Nutr 2011; 93(4):844-50.

As always the information presented in this blog is for educational purposes only. It should not be considered as specific medical, nutritional, lifestyle, or other health-related advice.