Showing posts with label healthy eating. Show all posts
Showing posts with label healthy eating. Show all posts

Sunday, December 22, 2013

A Final Word (At Least For Now) On Eating Healthy

As I get ready to hang up my stethoscope again, and ponder the over one-thousand conversations I've had with patients and others over the past three years about eating for health, one theme repeatedly comes to mind: despite their belief to the contrary, most people don't truly understand what it means to eat healthy. They are also confused about the value of eating healthy when the diet still includes plenty of unhealthy foods. Healthy foods, no matter how much you eat, do not neutralize the ill effects of unhealthy foods.

As a service to all, here is a brief synopsis of the elements of a healthy diet. It's little technical at first, but I get down to a basic list at the end.

First, let's take a quick look at what are called the essential nutrients, of which there are six categories, that all humans basically need to survive. By essential, we mean that the human body cannot produce these on its own without outside help.

There are:
13 essential vitamins
Vitamins are grouped into two categories:
  • Fat-soluble vitamins are stored in the body's fatty tissue. The four fat-soluble vitamins are vitamins A, D, E, and K.
  • There are nine water-soluble vitamins. The body must use water-soluble vitamins right away. Any left over water-soluble vitamins leave the body through the urine. Vitamin B12 is the only water-soluble vitamin that can be stored in the liver for many years.
There are 15 give or take essential minerals. There are also trace minerals not listed here.
There are 9 essential amino acids
  • histidine, 
  • isoleucine, 
  • leucine, 
  • lysine, 
  • methionine, 
  • phenylalanine, 
  • threonine,  
  • tryptophan
  • valine.
2 essential fatty acids
  • alpha linolenic acid
  • linoleic acid

water
air

Some also think that choline, once thought a vitamin, is also an essential nutrient.

There are also other amino acids and fatty acids, and many other compounds in foods, such as antioxidants, enzymes, etc. that are metabolically active but are not essential to the diet as the human body can function without them.

Okay, so what are you supposed to do with all this detail. Nothing really other than eat foods that contain them.

For example, 11 of the vitamins can be obtained from eating fruits and vegetables.

One, vitamin D, can be made by sun exposure or found in foods like unsweetened almond milk.

The other Vitamin, B12, can be found in fish, chicken and meat. I'll come back to these later.

The minerals can be found in vegetables, fruits, nuts, beans whole grains, and seeds.

The amino acids and choline can be found in nuts, whole grains, beans, eggs, fish, chicken and meat.

The fatty acids, or their derivatives, can be found in seeds like chia and flax, as well as healthy wild fish like Alaskan Salmon.

So what does a healthy diet look like?

It contains daily raw fruits and vegetables, fresh or frozen. Fruits must include berries, banana, citrus, apples, and melons. Other fruits are optional. Vegetables must contain leafy green vegetables, collards, onions, tomatoes, carrots, onions, garlic, and mushrooms.
It contains raw whole nuts (includes pecans, almonds, pistachio, Brazil nuts, and macadamia- at least twenty a day except for Brazil nuts-limit to two a day), cooked beans (limit soybean but some okay), raw seeds (chia and flax best, but limit), and minimally processed whole grains like steel cut oatmeal with no preservatives nor genetically modified grains (non-GMO).
It contains wild fatty fish like wild salmon, herring, sardines, cod, halibut, etc. (3-4 times a week)
It contains free range chicken once a week, free range eggs twice a week, and lean antibiotic meat every other week as a side dish.
It includes dark chocolate(for the polyphenols) of at least 70% cacao with less than 5 grams of sugar per serving with a serving size equal to at least a third of the bar.
It contains unsweetened almond milk.
A very little olive or safflower oil.
It contains sun exposure and at least 50 ounces of fluids a day.
Of course, even a good thing in excess is harmful. So eat these foods in moderation, eat mindfully, and remember what the Okinawans say before every meal: Hora Hachi Bu (eat until your 80% full)


A healthy diet does not contain dairy of any kind (after infancy), yogurt included, and definitely not dairy that contains added hormones such as Bovine Recombinant Growth Hormone (which is part of all non-organic dairy), artificial sweeteners or added sugars, processed breads with added sugar, pastas whole grain or otherwise, ketchup with high fructose corn syrup (most), chips, processed snacks, pretzels, crackers, cold cut meats, processed meats, processed cereals like Cheerios and Kashi made from genetically modified grains (also don't be fooled by the label Organic: read the label and watch for added sugar greater than 4 grams per serving-if so, avoid), sweetened drinks or bottled fruit juices, health bars, protein touring products -- including bars, drinks, shakes or any other product touting protein, any supplements (unless prescribed by a knowledgeable physician), any multivitamins (unless pregnant), fried foods, burnt or charred foods, any food with partially hydrogenated on its ingredient list (even if label states no trans-fats), non-sun dried fruit (even if sun-dried eat in moderation), no foods or drinks whatsoever with preservatives added including nitrates and sulfites in particular, too many smoothies even if all raw ingredients--too many calories involved, farm-raised fish, especially tilapia and salmon, more than once a week tuna, non-organic apples, corn or potatoes, movie theater and microwave popcorn, too many oils including coconut, olive, sunflower, and safflower oils, too many starchy vegetables, candies with sugar and chemicals, foods with added dyes, non-organic soy-based products, and more food than you need to live-which is not really all that much after you meet the essential requirements. 

I hope this information has been helpful and I wish you all Bon Appetite. If you have any questions, please feel free to write me at steven.charlap.md@mdprevent.net for at least the next six months.

Tuesday, September 17, 2013

New Study May Have Discovered Real Anti-Aging Approach

Last week, an  obese senior patient with multiple medical problems asked me in earnest if changing her lifestyle would actually make a difference to her health after all the damage her body had already incurred.  My response included that at a minimum, changing her eating habits, moving more, and managing stress better would slow, perhaps even stop certain further damage.  I was not so brazen to state that actions taken late in life would actually reverse years of neglect. Even though some recent studies have shown that lifestyle changes can reverse type 2 diabetes and improve heart and vascular health, nevertheless, no one knows precisely when someone crosses the line of no return (of course unless they pass). As one who follows the evidence, I refuse to give patients false hopes and perpetuate unverified information. But, I have some good news.

For some time it's been known that a poor lifestyle and stress in particular are linked to accelerated shortening of telomeres.  The telomere is the tail section of our chromosomes. Every time a cell divides, the telomere naturally shortens. After a certain number of cell divisions, the telomere reaches a certain length which results in either cell death (apoptosis) or cell shutdown (senescence.)  When enough cells stop functioning, so do we. It is believed by scientists that telomere shortening may be one of the major factors in our aging and ultimate demise. Stress has been linked to speeding up the process and scientists have yet to discover a mechanism to stop this shortening... until now.

A new study from the University of California at San Francisco (UCSF) reveals something absolutely remarkable.  The study led by Dr. Dean Ornish and Dr. Elizabeth Blackburn, who won the Nobel prize for her work on telomeres, showed for the first time a connection between lifestyle and the actual lengthening of telomeres. It was a small study and it illustrated that those participants, all men, who embraced significant lifestyle change such as healthier eating which included low fat, low-carb meals, increased their physical activity, managed their stress better with meditation and other forms of relaxation, and improved their social contacts, actually saw a lengthening of their telomeres.  Aversely, the control group generally saw a decrease in telomere length.

Here is a quote from the study:

“Our findings are consistent with those of earlier studies, but to our knowledge this is the first study of any intervention that has shown a significant change in relative telomere length in human immune-system cells over time when compared with a non-intervention group. We noted a correlation between the degree of positive lifestyle change and increase in telomere length when all participants were assessed together, which supports the internal validity of this study. Although our sample size was small and all participants had early-stage cancer with low risk of metastasis, we believe large, randomized trials to test the validity and applicability of our results are warranted.”

The study, however, had a number of weaknesses, not the least of which it included a small sample size, it was not a randomized double-blind controlled study, it only included men with prostate cancer, and it had several variable lifestyle changes. Notwithstanding, the study holds out the tantalizing prospect that switching your lifestyle at any time can actually slow down or possibly even reverse aging.  There is much more research to be done, but the next time a patient asks me if it is possible to reverse years of damage, I will cite this study and future studies I'm hopeful will come that indicate that the answer may be yes.

In the interim, I don't know about you, but I will try to live a lifestyle linked to lengthening of telomeres and hope (and pray) for the best.