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Exercise: How Much is Enough?
Based on several recent large-scale studies exercise has emerged as a strong protective factor both for incidence and progression cancer in the prostate and breast. A landmark study in 2011 that followed 2700 men found that those who reported at least three hours/week of vigorous activity had a 61% lower risk of dying from prostate cancer than those who exercised less than one hour/week. All exercise is good exercise with recreational and leisure activity showing a decrease in mortality. But a proportionately decreased risk was seen when the intensity of exercise increased.
Similarly research with breast cancer populations has consistently shown cancer risk is reduced with exercise. Across 73 studies the average risk reduction is 25-30% for the highest versus lowest activity groups.
The American Cancer Society now recommends 60 minutes of moderate or 30 minutes of vigorous exercise every day. But what is meant by vigorous?" This is defined by any exercise that elevates your heart rate to approximately 70-90% of maximal heart rate (to figure maximal heart rate subtract your age from 220) or simply elevates your breathing to a level where holding a normal conversation is not possible. So for the longest healthiest life get moving and make the most of our workouts!
Recent Results Cancer Research 2011 186: 13-42
Journal of Clinical Oncology. 2011 29: 726-732
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What’s The Connection Between Phone Addiction And Teen Depression?
Most adults spend too much time on their phones, and it is harming their mental health. Dr. Charles Raison, psychiatrist and director of the Vail Health Behavioral Health Innovation Center, attributes some of the cause for rising depression and suicide rates to phone addiction. He wants to build a study at the center to examine how removing phones from the hands of teens may help their mental health.
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The Bitter Truth About Sugar
We are a nation of sugar addicts. In 1900, the average American consumed 4 pounds of sugar each year. The current average sugar consumption in our country is an astronomical 150-170 pounds per person each year. This hard truth has contributed to an obesity rate that is 35.7% for adults.
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Body Composition: Why It Matters More Than a Number on the Scale
In the world of health and fitness, weight often steals the spotlight. We celebrate weight loss milestones, obsess over numbers on the scale, and let weight loss/gain dictate how we feel about our progress. But there's a far more accurate and meaningful indicator of health and fitness: body composition.