Can vitamins increase risk of cancer ?

Yes

Vitamins are absolutely essential nutrients and vitamin deficiency causes various illness.

But a high dose of vitamin, far too much than needed by the body, is also bad.

Everything in moderation is good. Even an abundance of a good thing is bad.

It is similar to food. Lack of food would cause starvation and even death in the extreme. But too much of food causes obesity and other health problems. Same principle applies to vitamins.

A Cochrane review looked at the ability of vitamins to prevent lung cancer. The review concluded that there is “no beneficial effect of supplements for the prevention of lung cancer and lung cancer mortality in healthy people”

Worryingly, the review also found that the following:

Vitamin A supplements increase lung cancer incidence and mortality in smokers or persons exposed to asbestos”.

Vitamin C increases lung cancer incidence in women.

Vitamin E increases the risk of haemorrhagic strokes.

So if you are having a healthy balanced diet, be careful with vitamin supplements.

Drugs for preventing lung cancer in healthy people
Marcela Cortés-Jofré et al. Cochrane Database Syst Rev. 2020.
Free PMC article

Disclaimer: Please note- This blog is NOT medical advice. This blog is NOT a expert medical opinion on various topics. This blog is purely for information only and do check the sources where cited. Please DO consult your own doctor to discuss concerns and options relevant to you. The views expressed in this blog represent the author’s views held at the time of drafting the blog and may change overtime, particularly when new evidence comes to light. The blog is not previewed, commissioned or otherwise endorsed by any organisation that the author is associated with. The views expressed in this blog are not, in way whatsoever, intended to be a substitute for professional advice.

Vaccine Hesitancy

Worries about vaccines are nothing new. Anti_vaccination groups were formed in 1860s when small pox vaccination was made compulsory. Even when small pox was causing untold devastation, some people were opposed to it.

The Vaccine hesitancy of 19th century is somewhat excusable. Some of the worries were real, and not much was known about the safety of small pox vaccine at that time. Lot of people were ill-informed and did not have access to good sources of information. They didn’t know the immense potential of the vaccination to eliminate distressing diseases.

Vaccines have now successfully eradicated small pox. Many other devastating infectious diseases such as polio have been controlled in many countries across the globe due to the vaccines.

Some of the vaccine hesitancy in west is because western people are not fully aware of the devastating power of infectious diseases (at least until COVID-19 came to the world in 2020).

Vaccine hesitancy is also sustained by “confirmation bias” . Confirmation bias is the tendency of human beings to seek information that confirms what they believe in. If you distrust vaccines, you go looking for information that confirms you beliefs and you disregard information that proves vaccines are hugely beneficial.

Some people wish for a 100% safe vaccine. But there is no such thing as completely risk free vaccine. It is true Vaccines can cause serious side effects. It is true that Vaccines can cause long term side effects. It is true that Vaccines can rarely cause life threatening side effects and even deaths.

It is normal to worry about side effects of vaccines. But the potential for side effects should not be the reason to decline vaccination.

One has to look at benefits as well as risks. Some people focus on everything bad that can happen as a result of vaccines.

COVID-19 vaccines had an unusually short development period. This is because of the pandemic. The available evidence indicate that the benefits of the vaccines are far greater than risks. It is true that there is no long term safety data. But in the middle of a pandemic, which has caused untold misery to millions, waiting for perfect long term data is not an option.

If you are sceptical about vaccines, please do focus on benefits as well as risks. Do not focus on risks only.

References

BMJ. Practice Pointer. Covid-19 vaccination hesitancy. BMJ 2021; 373 doi: https://doi.org/10.1136/bmj.n1138 (Published 20 May 2021)
Cite this as: BMJ 2021;373:n1138

BMJ. News. Covid-19: Pfizer-BioNTech vaccine is “likely” responsible for deaths of some elderly patients, Norwegian review finds.
BMJ 2021; 373 doi: https://doi.org/10.1136/bmj.n1372 (Published 27 May 2021)
Cite this as: BMJ 2021;373:n1372

Disclaimer: Please note- This blog is NOT medical advice. This blog is NOT a expert medical opinion on various topics. This blog is purely for information only and do check the sources where cited. Please DO consult your own doctor to discuss concerns and options relevant to you. The views expressed in this blog represent the author’s views held at the time of drafting the blog and may change overtime, particularly when new evidence comes to light. The blog is not previewed, commissioned or otherwise endorsed by any organisation that the author is associated with. The views expressed in this blog are not, in way whatsoever, intended to be a substitute for professional advice.

COVID-19 infection affects brain and mental health

A recent paper published in Lancet Psychiatry reports that at least 1 in 3 patients , who have recovered from severe COVID, have substantial neurological and psychiatric problems during the next six months .

This report is very worrying .

If study findings are confirmed by other studies, this would be yet another substantial reason to consider getting the vaccine as soon as it is offered.

References

Guardian. One in three survivors of severe Covid diagnosed with mental health condition
Study finds 34% developed psychiatric or neurological conditions after six months
.
Sarah Marsh
@sloumarsh
Wed 7 Apr 2021 06.00 BST

BMJ. Covid-19: One in three has neurological or psychiatric condition diagnosed after covid infection, study finds
BMJ 2021; 373 doi: https://doi.org/10.1136/bmj.n908 (Published 07 April 2021)
Cite this as: BMJ 2021;373:n908

Taquet M, Geddes JR, Husain M, Luciano S, Harrison PJ. 6-month neurological and psychiatric outcomes in 236379 survivors of COVID-19: a retrospective cohort study using electronic health records. Lancet Psychiatry 2021 (published online 6 Apr). doi:10.1016/S2215-0366(21)00084-5. https://www.thelancet.com/journals/lanpsy/article/PIIS2215-0366(21)00084-5/fulltext.

Disclaimer: Please note- This blog is NOT medical advice. This blog is NOT a expert medical opinion on various topics. This blog is purely for information only and do check the the sources where cited. Please DO consult your own doctor to discuss concerns and options relevant to you. The views expressed in this blog represent the author’s views held at the time of drafting the blog and may change overtime, particularly when new evidence comes to light. The blog is not previewed, commissioned or otherwise endorsed by any organisation the author is associated with. The authors views are not in way intended to be a substitute for professional advice.