Does Cell Phone Use Lead to Brain Cancer?

Written by Dr. Steve Chaney on . Posted in Environment and Health, Issues

Author: Dr. Pierre DuBois

Does Cell Phone Use Lead To CancerThere are currently close to 6 billion cell phone subscriptions worldwide, and increased usage of cell phones has understandably led to a greater level of interest in how safe they are.

The main concern for our health is that mobile phones emit and receive electromagnetic radiation as a result of their need to communicate with relay towers, and some of this radiation is absorbed by the head when the phone is held up to the ear.

Whether or not the radiation (both the amount and the frequency) that a typical mobile phone user is likely to receive is potentially damaging to their health has been the subject of debate for some time.

Does Cell Phone Use Lead to Brain Cancer?

Anecdotal evidence that high mobile phone use can potentially lead to brain cancer is not hard to find. Newspapers and other media sources are only too ready to run such stories.

However, given that there are so many people using mobile communication so regularly, the chances are that someone is going to have a brain tumor at some point, whether or not there is any link with the amount of time they spend on their phone.

The obvious question is whether or not there is good reason to be concerned over how and how much you use your phone.

The Evidence Against Cell Phone Usage Leading To Brain Cancer

The most recent assessment of the scientific evidence of mobile phone safety was carried out by the European Commission Scientific Committee on Emerging And Newly Identified Health Risks (SCENIHR). They concluded that mobile phone usage was unlikely to increase the risk of developing brain tumors.

The most recent results from a long-term study by researchers from the Institute of Cancer Epidemiology at the Danish Cancer Society in Denmark also failed to find any link between mobile phone usage and the development of brain tumors or any other cancers of the nervous system.

This study was particularly significant in that it used most of the Danish population to determine if there was any difference in the incidence of brain cancer between mobile phone users and non-mobile phone users. Unsurprisingly, this work has been quoted frequently, especially by cell phone companies, as evidence that their products have now been given a completely clean bill of health.

The Evidence For Cell Phone Usage Leading To Brain Cancer

In contrast to the previous results, the conclusion of a 2010 paper published in the International Journal of Epidemiology on the subject suggested that while no overall link was found between two kinds of brain tumor and mobile phone usage, the data did point to a possible increase in the development of glioma-type tumors in the most intensive users

The authors also pointed out that since the new generations of smart phones are being used for even greater periods of time, especially by younger people, further and ongoing studies in this area are definitely merited.

In 2011, the World Health Organization (WHO) classified mobile phone radiation as “potentially carcinogenic to humans.” Following from this, many countries have adopted a precautionary approach and suggested moderation in cell phone usage. Using a hands-free kit to avoid holding a phone next to your head has also been advised.

While the available evidence suggests that low and normal usage of a mobile phone does not increase your risk of developing a brain tumor, it is probably wise to reduce your exposure to electromagnetic radiation as much as you can, and certainly to avoid spending long periods of the day with a phone next to your ear.

The Bottom Line:

  • The link between cell phone use and brain cancer is inconclusive at present. Most studies find no overall link, but suggest that certain types of brain cancers could be associated with cell phone use.
  • Experts recommend not holding cell phones next to your head for long periods of time.

These statements have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure or prevent any disease.

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High Protein Diets and Weight Loss

Posted October 16, 2018 by Dr. Steve Chaney

Do High Protein Diets Reduce Fat And Preserve Muscle?

Author: Dr. Stephen Chaney

Healthy Diet food group, proteins, include meat (chicken or turkAre high protein diets your secret to healthy weight loss? There are lots of diets out there – high fat, low fat, Paleolithic, blood type, exotic juices, magic pills and potions. But recently, high protein diets are getting a lot of press. The word is that they preserve muscle mass and preferentially decrease fat mass.

If high protein diets actually did that, it would be huge because:

  • It’s the fat – not the pounds – that causes most of the health problems.
  • Muscle burns more calories than fat, so preserving muscle mass helps keep your metabolic rate high without dangerous herbs or stimulants – and keeping your metabolic rate high helps prevent both the plateau and yo-yo (weight regain) characteristic of so many diets.
  • When you lose fat and retain muscle you are reshaping your body – and that’s why most people are dieting to begin with.

So let’s look more carefully at the recent study that has been generating all the headlines (Pasiakos et al, The FASEB Journal, 27: 3837-3847, 2013).

The Study Design:

This was a randomized control study with 39 young (21), healthy and fit men and women who were only borderline overweight (BMI = 25). These volunteers were put on a 21 day weight loss program in which calories were reduced by 30% and exercise was increased by 10%. They were divided into 3 groups:

  • One group was assigned a diet containing the RDA for protein (about 14% of calories in this study design).
  • The second group’s diet contained 2X the RDA for protein (28% of calories)
  • The third group’s diet contained 3X the RDA for protein (42% of calories)

In the RDA protein group carbohydrate was 56% of calories, and fat was 30% of calories. In the other two groups the carbohydrate and fat content of the diets was decreased proportionally.

Feet_On_ScaleWhat Did The Study Show?

  • Weight loss (7 pounds in 21 days) was the same on all 3 diets.
  • The high protein (28% and 42%) diets caused almost 2X more fat loss (5 pounds versus 2.8 pounds) than the diet supplying the RDA amount of protein.
  • The high protein (28% and 42%) diets caused 2X less muscle loss (2.1 pounds versus 4.2 pounds) than the diet supplying the RDA amount of protein.
  • In case you didn’t notice, there was no difference in overall results between the 28% (2X the RDA) and 42% (3X the RDA) diets.

Pros And Cons Of The Study:

  • The con is fairly obvious. The participants in this study were all young, healthy and were not seriously overweight. If this were the only study of this type one might seriously question whether the results were applicable to middle aged, overweight coach potatoes. However, there have been several other studies with older, more overweight volunteers that have come to the same conclusion – namely that high protein diets preserve muscle mass and enhance fat loss.
  • The value of this study is that it defines for the first time the upper limit for how much protein is required to preserve muscle mass in a weight loss regimen. 28% of calories is sufficient, and there appear to be no benefit from increasing protein further. I would add the caveat that there are studies suggesting that protein requirements for preserving muscle mass may be greater in adults 50 and older.

The Bottom Line:

1)    Forget the high fat diets, low fat diets, pills and potions. High protein diets (~2X the RDA or 28% of calories) do appear to be the safest, most effective way to preserve muscle mass and enhance fat loss in a weight loss regimen.

2)     That’s not a lot of protein, by the way. The average American consumes almost 2X the RDA for protein on a daily basis. However, it is significantly more protein than the average American consumes when they are trying to lose weight. Salads and carrot sticks are great diet foods, but they don’t contain much protein.

3)     Higher protein intake does not appear to offer any additional benefit – at least in young adults.

4)     Not all high protein diets are created equal. What some people call high protein diets are laden with saturated fats or devoid of carbohydrate. The diet in this study, which is what I recommend, had 43% healthy carbohydrates and 30% healthy fats.

5)    These diets were designed to give 7 pounds of weight loss in 21 days – which is what the experts recommend. There are diets out there promising faster weight loss but they severely restrict calories and/or rely heavily on stimulants, they do not preserve muscle mass, and they often are not safe. In addition they are usually temporary.  I do not recommend them.

6)    This level of protein intake is safe for almost everyone. The major exception would be people with kidney disease, who should always check with their doctor before increasing protein intake. The only other caveat is that protein metabolism creates a lot of nitrogenous waste, so you should drink plenty of water to flush that waste out of your system. But, water is always a good idea.

7)     The high protein diets minimized, but did not completely prevent, muscle loss. Other studies suggest that adding the amino acid leucine to a high protein diet can give 100% retention of muscle mass in a weight loss regimen – but that’s another story for another day.

These statements have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure or prevent any disease.

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