Eating fatty fish could lower the risk of one of the most common and serious forms of arthritis.
Also, ADHD can affect teens' driving performance and there's evidence that growing up with brothers and sisters could lead to a healthy marriage.
More Fish, Less Arthritis
Eating fatty fish could lower a woman's risk of rheumatoid arthritis.
A new study from Sweden looked at more than 32,000 women and found a weekly portion of fatty fish, such as salmon, or four servings of lean fish, such as cod, can cut the risk of developing rheumatoid arthritis in half.
Researchers say the benefits are likely because the fish are high in omega 3 fatty acids.
ADHD Impairs Driving
Attention deficit hyperactivity disorder -- ADHD -- significantly impairs driving performance for teenagers.
Researchers at Cincinnati Children's Hospital Medical Center used a driving simulator to test 16 and 17 year olds and found drivers with ADHD had significantly more variability in speed and lane position, even with no distractions.
They found texting affected speed and lane position for all teen drivers in the study.
More Siblings = Less Divorce?
Having brothers and sisters could lower the chances of your marriage ending in divorce as an adult.
The new research from Ohio State University also found the more siblings, the better. Each additional sibling reduced a person's chance of divorce by 2 percent.
Researchers say people with siblings learn to consider other points of view and how to talk through problems.