Metformin is the most widely used antihyperglycemic drug in patients with type 2 diabetes (T2D). Over the past 2 decades, several studies have highlighted a substantial increase in the risk of vitamin B12 deficiency in patients with T2D on metformin therapy. This can lead to several complications and induce or exacerbate peripheral neuropathy. Despite these data, there are no definite guidelines for screening, diagnosing, and treating vitamin B12 deficiency in patients with T2D on metformin therapy. Therefore, in this narrative review, we aimed to suggest a practical diagnostic and therapeutic strategy to address vitamin B12 deficiency in patients with T2D receiving metformin treatment. Clinical evidence supporting an increased risk of vitamin B12 deficiency in patients with T2D on metformin therapy and its risk factors and potential complications are also discussed.
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The year 2020 saw the emergence of a novel coronavirus—the severe acute respiratory syndrome coronavirus 2— which has led to an unprecedented pandemic that has shaken the entire world. The pandemic has been a new experience for Malaysia, especially during the implementation of large-scale public health and social measures called the Movement Control Order (MCO). This paper seeks to describe the experiences of the Malaysian healthcare system thus far in combatting the pandemic. The Malaysian healthcare system comprises two main arms: public health and medicine. The public health arm focuses on early disease detection, contact tracing, quarantines, the MCO, and risk stratification strategies in the community. The medical arm focuses on the clinical management of coronavirus disease 2019 (COVID-19) patients; it encompasses laboratory services, the devising of clinical setting adjustments, and hospital management for COVID-19 and non-COVID-19 patients. Malaysia experienced intense emotions at the beginning of the pandemic, with great uncertainty regarding the pandemic’s outcome, as the world saw a frighteningly high COVID-19 mortality. As of writing (May 30, 2020), Malaysia has passed the peak of its second wave of infections. The experience thus far has helped in preparing the country’s healthcare system to be vigilant and more prepared for future COVID-19 waves. To date, the pandemic has changed many aspects of Malaysia’s life, and people are still learning to adapt to new norms in their lives.
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