New findings in the European Heart Journal reveal older men who were big in their 20s are more likely to suffer from atrial fibrillation, i.e. abnormal heart rhythm. The study, started in 1970, involved more than 7,000 men, ages 45 to 55, and asked participants to state their weight at 20 years old. Results showed atrial fibrillation increases linearly with body size and weight gain, and the larger men were in their 20s the more weight they gained throughout life. Researchers claim abnormal heart rhythm among men 60 to 70 years old will become more common as our overweight population ages; via EurekAlert!