Health doesn't have to be complicated, that's one of our core principles. Here we explain everything important about your health: from lifestyle topics to practical information on various treatment options.
Dr. Ashley White
Medical Lead
Ashley is a doctor with 10 years of clinical experience, with expertise in public health and global health program implementation. She is committed to scaling safe, accessible virtual care for our patients. With dual certifications in family and emergency medicine and board certification in obesity medicine, she leads the Canadian medical team to ensure we're delivering high-quality medical care.
Dr. Megha Poddar is an endocrinologist and obesity medicine specialist in Canada with extensive experience leading clinical and educational initiatives in metabolic health. She serves as Medical Director of an interdisciplinary national obesity program that integrates behavioral therapy and pharmacotherapy, and she is a co-author of the 2025 Canadian Obesity Clinical Practice Guidelines and the global ICHOM obesity data set standardized PROMs. At nymble Health, she is developing innovative digital platforms to support patient education, adherence, and long-term outcomes. Dr. Poddar is a global thought leader in advancing access to evidence-based obesity care, with a focus on integrating GLP-1 therapies into specialty practice.
Dr. Zainab Najarali is a full-time Emergency Medicine physician practicing in the Greater Toronto Area and a Family Medicine–trained physician in Canada, with extensive experience in virtual care delivery, clinical governance, and digital prescribing. She serves as Lead Prescriber for HeliosX in Canada, where she provides medical oversight for scalable, evidence-based prescribing across multiple digital health platforms. In addition to her role at HeliosX, Dr. Najarali also operates a women’s health practice focused on menopause management and hormone therapy. She is an Assistant Professor at McMaster University, and is actively involved in medical education, and digital health innovation, with a particular interest in expanding access to evidence-based metabolic and women’s health care through responsible use of technology.
Roger Firsoff is a Primary Care Nurse Practitioner with 24 years of experience in primary and urgent care, emergency medicine, occupational health, and addictions and mental health. He has a particular focus in men’s health, including sexual health, hair loss, and testosterone therapy. A graduate of Ryerson University and the University of Toronto, he holds both Primary Care and Adult Nurse Practitioner specialties. Roger has instructed and supervised Nurse Practitioner students at York University and Ryerson University for the past 15 years, is affiliated with Athabasca University, and holds Nurse Practitioner registration in multiple Canadian provinces.
Karlie DeAngelis, NP is a Nurse Practitioner licensed across Ontario, British Columbia, Alberta, and additional Canadian provinces, with a background in advanced cardiovascular care, critical care, migraine, and mental health management. She specializes in evidence-based metabolic and weight management care. She serves as a Prescriber with HeliosX in Canada, and supports safe, evidence-based care within established clinical governance frameworks. Outside of her work with HeliosX, Karlie practices in mid-life women’s health and menopause care. She holds specialty certification in Canadian Cardiovascular Nursing and is a Menopause Society Certified Practitioner (MSCP). Karlie is a Lecturer at the University of Toronto Bloomberg Faculty of Nursing and has previously taught at Conestoga College and Humber College. Her published research includes work on high-functioning teams in critical care and paediatric end-of-life care.
