Category: Medicine Hat News

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Important Things to Remember About Recreational and Medical Use of Marijuana

A bird in Maui. (Dr. Noorali Bharwani)
A bird in Maui. (Dr. Noorali Bharwani)

Dr. Sanjay Gupta, Neurosurgeon and Chief Medical Correspondent for CNN is reported to have said, “Every 19 minutes somebody dies of a prescription drug overdose. It doesn’t happen with marijuana.” In the past Gupta was against legalising medical marijuana in the U.S. but now he is in favour of it. He sees some benefit for certain types of illnesses.

The use of medical marijuana (medical cannabis) as a medicine has not been rigorously tested due to several restrictions. But there is some evidence to suggest cannabis can reduce nausea and vomiting during chemotherapy, improve appetite in people with HIV/AIDS, and reduce chronic pain and muscle spasm.

Medical marijuana can improve sleep, and improve tics in Tourette syndrome. When usual treatments are ineffective, cannabinoids have also been recommended for anorexia, arthritis, migraine, and glaucoma. It should not be used in pregnancy.

Use of marijuana is not without side effects such as: dizziness, feeling tired, vomiting, and hallucinations. There is some concern about the long-term use of marijuana. It may cause memory loss, addiction, and schizophrenia.

Recreational use of cannabis is illegal in most parts of the world, but the medical use of cannabis is legal in certain countries, including Canada and 29 states in the U.S.

A cannabis plant includes more than 400 different chemicals, of which about 70 are cannabinoids. In comparison, typical government-approved medications contain only one or two chemicals. The number of active chemicals in cannabis is one reason why treatment with cannabis is difficult to classify and study.

Articles in the Canadian Medical Association Journal (CMAJ September, 2017) make few important points on the use of medical marijuana:

  1. Despite widespread availability, medical marijuana is still experimental.
  2. Use of medical marijuana can increase the risk of motor vehicle collision.
  3. The drug should be titrated slowly with low initial dosing.
  4. Users of medical marijuana may be vulnerable to psychosis.
  5. Recreational and medical marijuana are not equivalent and therefore, should have different frameworks for access.
  6. User should remember there are substantial gaps in our knowledge on the use of medical marijuana.
  7. More vigorous research is required to make better use of this drug.

“I do want to mention a concern that I think about as a father. Young, developing brains are likely more susceptible to harm from marijuana than adult brains. Some recent studies suggest that regular use in teenage years leads to a permanent decrease in IQ. Other research hints at a possible heightened risk of developing psychosis,” says Gupta in one of his articles.

On August 11, 2016, Health Canada announced the new Access to Cannabis for Medical Purposes Regulations (ACMPR). The ACMPR allow for reasonable access to cannabis for medical purposes for Canadians who have been authorized to use cannabis for medical purposes by their health care practitioner.

These individuals will continue to have the option of purchasing safe, quality-controlled cannabis from one of the producers licensed by Health Canada. Canadians will also be able to produce a limited amount of cannabis for their own medical purposes, or designate someone to produce it for them.

Start reading the preview of my book A Doctor's Journey for free on Amazon. Available on Kindle for $2.99!

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Statistics Show Majority of Canadians Overweight and Overfat

Photograph by Dr. Noorali Bharwani.
Photograph by Dr. Noorali Bharwani.

According to Statistics Canada, 61.3 per cent of adult Canadians were overweight or obese in 2015, says an article in the Canadian Medical Association Journal (CMAJ August 31, 2017). That means three in five Canadians are overweight or obese.

In 2015, the percentage of those who were obese rose to 26.7 per cent, up from 23.1 per cent in 2004. Obesity has continued to increase in adult men and women who are age 60 years and older.

Researchers warn us focusing on body mass index (BMI) misses the risks of high body fat in people of normal weight.

BMI is a person’s weight in kilograms divided by the square of height in meters. BMI does not measure body fat directly. But BMI is an inexpensive and easy-to-perform method of screening for weight category.

Your BMI may be normal for your height and weight but you may still have more fat than is good for you. It may misclassify someone who is short and muscular.
On the other hand a high BMI can be an indicator of high body fatness.

BMI can be used for population assessment of overweight and obesity. Because calculation requires only height and weight, it is inexpensive and easy to use for clinicians and for the general public. BMI can be used as a screening tool for body fatness but is not diagnostic.

How is BMI interpreted for adults (over age 20)?

  1. BMI below 18.5 – underweight
  2. BMI 18.5 to 24.9 – normal or healthy weight
  3. BMI 25.0 to 29.9 – overweight
  4. BMI 30.0 and above – obese

The question is – Is BMI the best way to measure obesity?

The CMAJ article says, “A provincial spokesperson for Manitoba (where child obesity is climbing) questioned the value of the measurement because BMI does not consider lifestyle behaviours like dietary quality, physical activity, which are, in fact, stronger determinants of death and disease.”

The CMAJ article goes on to give many examples where BMI may not accurately reflect a person’s risk of serious obesity related illnesses. Incidence of coronary heart disease, stroke, cancer and type 2 diabetes is higher in overweight and obese person.

A recent study in Frontiers in Public Health (July 24, 2017) by Philip B. Maffetone and colleagues say using BMI to measure obesity likely underestimates the problem. They propose measuring a person’s waist instead of their weight to assess health risks. Abdominal fat or obesity has more severe health effects than fat in other parts of the body.

A person has to reduce abdominal girth to reduce adverse health risks. A person’s waist should be less than half their height. This waist-to-height ratio may be the single best clinical indicator of health risk as it can be used throughout childhood, into adult life, as well as throughout the world.

Most clinicians usually know if the patient in front of them has too much body fat. They should not have to wait for the latest consensus to encourage lifestyle changes: lose weight, make dietary quality changes and increase physical activity. Simply put… eat less and exercise more.

Start reading the preview of my book A Doctor's Journey for free on Amazon. Available on Kindle for $2.99!

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Hereditary Cancer and the Importance of BRCA Gene Testing

Antigua (Dr. Noorali Bharwani)
Antigua (Dr. Noorali Bharwani)

Longtime Newfoundland and Labrador politician, Judy Foote, has resigned as federal cabinet minister.

Foote made the move to spend more time with her family after learning she has the BRCA gene, which is hereditary and can impact her children. BRCA stands for breast cancer.

Foote said she has had two bouts with cancer, but as far as she knows, she is now cancer-free. That is good news.

BRCA testing uses DNA analysis to identify harmful changes that signal a higher risk for breast and ovarian cancer.

If a positive DNA mutation (changes in the structure of a gene) is discovered in one person, other family members can be tested to determine if they also carry a BRCA mutation. A genetic counsellor can make you understand your personal risks and prevention strategy.

About one in 200 women in North America carry a BRCA1 or BRCA2 mutation. But among certain ethnic groups the prevalence is considerably higher. The frequency in those of Ashkenazi (Eastern European) Jewish ancestry is one in 50. Other groups with high frequencies of mutations include women from Iceland and Poland.

Actor Angelina Jolie had a double mastectomy due to the presence of BRCA gene. Actor Pierce Brosnan’s daughter Charlotte Emily died of ovarian cancer at age 42. Brosnan is a former James Bond star whose first wife, Cassandra (Charlotte’s mother), also passed away due to the same disease in 1991 when she was 43.

We know if you have a family history of ovarian cancer then the risk of ovarian cancer increases amongst women in that family.

What is the difference between BRCA1 and BRCA2 genes?

The types of cancers associated with the two genes are different. Carriers of BRCA1 gene mutation have a slightly increased risk of ovarian cancer compared to those with BRCA2.

It is also known that carriers of BRCA2 genes have risks of different types of cancers, including pancreatic cancer and melanoma. For men with the BRCA2 mutation, there is an increased risk of both prostate and breast cancers.

Who is eligible for BRCA genetic testing?

A person who has:

  • A strong family history of cancer
  • The cancer must have occurred in young ages within the family
  • If you are a member of ethnic groups known to be affected
  • Based on your personal and family history a genetic counsellor can recommend BRCA genetic testing

Early detection of breast cancer has dramatically changed the prognosis of the disease. We cannot say the same thing about ovarian cancer because we do not have any tests for early detection.

More than 60 per cent of the women with ovarian cancer are in advanced stage when first diagnosed. Their five-year survival rate is less than 30 per cent. Their prognosis is poor and they have very few treatment options.

To summarise, having a BRCA gene mutation is uncommon. Inherited BRCA gene mutations are responsible for about 5 to 10 percent of breast cancers and about 15 percent of ovarian cancers. If you have a personal or family history of breast or ovarian cancer then discuss your options with your doctor. Also understand the ethical, legal, and psychosocial implications of what you find. Check if the findings will affect your insurance policy.

Start reading the preview of my book A Doctor's Journey for free on Amazon. Available on Kindle for $2.99!

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Death of Comedian Robin Williams and the Tragic Effect of Dementia

Maui, Hawaii (Dr. Noorali Bharwani)
Maui, Hawaii (Dr. Noorali Bharwani)

Dementia is a general term for loss of memory and other mental abilities severe enough to interfere with daily life. It is caused by physical changes in the brain. There are at least 10 different types of dementia.

Alzheimer’s disease is the most common type of dementia and accounts for an estimated 60 to 80 percent of cases.

Lewy body dementia is a progressive disease and is the second most common type of progressive dementia. It affects 1.4 million Americans.

Actor comedian Robin Williams, a man who entertained and made millions of people laugh, committed suicide on August 11, 2014. Questions were raised on the state of his mind and health at the time of his tragic death. At autopsy, the brain of Williams showed signs of diffuse Lewy body disease.

The Lewy Body Dementia Association website has a clarifying statement on the autopsy report on Williams. It goes on to explain the effect of Lewy body dementia.

Before his death, Williams had a clinical diagnosis of Parkinson’s disease and received treatment for his symptoms. He also suffered from depression, anxiety and paranoia, which may occur in either Parkinson’s disease or dementia with Lewy bodies.

In the early 1900s, while researching Parkinson’s disease, the German-born American neurologist, Friederich H. Lewy, discovered abnormal protein deposits that disrupt the brain’s normal functions. Lewy body dementia exists either in pure form, or in conjunction with other brain changes, including those typically seen in Alzheimer’s disease and Parkinson’s disease.

Lewy body dementia is a progressive disease. It causes a decline in mental functions. There may be visual hallucinations, and changes in alertness and attention. They may have Parkinson’s disease-like symptoms such as rigid muscles, slow movement and tremors.

In early Parkinson’s disease, Lewy bodies are generally limited in distribution, but in dementia with Lewy bodies, the Lewy bodies are spread widely throughout the brain, as was the case with Williams.

To make a clinical diagnosis of dementia with Lewy bodies, a person must have significant problems with thinking and memory that interfere with everyday life. There was no mention in the media or in the autopsy report that Williams exhibited these symptoms. But it is not uncommon for early signs of dementia to go unnoticed.

Making diagnoses of Lewy body dementia is not easy because it is a complex disease that can present with a range of physical, cognitive, and behavioural symptoms. Symptoms that can closely resemble other more commonly known diseases like Alzheimer’s and Parkinson’s. That is why it is widely undiagnosed. It can dramatically affect not only the person diagnosed but also the primary caregiver – usually the family.

Early and accurate diagnosis of Lewy body dementia, while not always easy, is of critical importance for better management. If they are misdiagnosed to have Alzheimer’s disease or Parkinson’s disease then they may react to medications differently. They need multidisciplinary treatment from different specialists.

Start reading the preview of my book A Doctor's Journey for free on Amazon. Available on Kindle for $2.99!