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.
The most important factor is your vitamin D serum level. In order to help prevent a wide variety of diseases and health ailments, including cancer, your vitamin D level needs to be between 50 and 70 ng/ml year-round. Vitamin D from sun exposure or a safe tanning bed is the BEST way to optimize your vitamin D levels. Just be cautious about the length of your exposure.