Currently retired, cardiothoracic surgeon John Macoviak MD MBA achieved a number of high points over the course of his career, including participation in robotic heart surgery work at the Mayo Clinic.. In addition, he has taught at Harvard Medical School and Georgetown University. John Macoviak MD MBA is the author or co-author of dozens of articles in peer-reviewed journals, and also offers up-to-date information through multiple online platforms.
His YouTube videos are devoted to medicine and health care. In one of the videos, he outlines the particular importance of vitamin D, which is vital for building and maintaining strong bones, as well as developing a healthy resistance to disease.
Humans produce vitamin D naturally after sufficient exposure to sunlight. They can also obtain adequate amounts through supplementation. In addition, vitamin D is present in some foods, such as salmon, other fatty fish, and fortified milk.
Lack of vitamin D can lead to serious and even life-threatening conditions, including osteoporosis, rickets, and heart disease. One recent study showed that people who got adequate amounts of vitamin D were less likely to exhibit symptoms of cardiometabolic disease.
According to genetic research, vitamin D affects the workings of more than 200 different genes in the human body. It has been shown to help regulate blood sugar, to prevent multiplication of abnormal cells in certain organs, and to potentially reduce the risk of stroke by 50 percent.
John Macoviak 