He is the Co-founder and Chairman of O'Leary Funds and the co-founder of Softkey. He has also previously served as a business journalist on CBC 's The Lang and O'Leary Exchange with Amanda Lang and hosted Redemption Inc.ailed as Canada's business equivalent of Donald Trump, O'Leary is one of Canada's most prominent entrepreneurs, investors, and financial pundits.
When calcium is low and/or a person has symptoms of vitamin D deficiency, such as bone malformation in children (rickets) and bone weakness, softness, or fracture in adults (osteomalacia), 25-hydroxyvitamin D usually is ordered to identify a possible deficiency in vitamin D.
If you are unsure of where to start, there are a few options. You might go to your doctor and find out where your vitamin D levels are right now. Better yet, use WellnessFX for testing and advice. You can search online for other self testing labs. If your level is below 30 ng/ml then you are vitamin D deficient.