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Cancer Causing Gene Mutation, Top Health Stories This Week

(CBS News) -- Women who test negative for the gene mutation that causes breast cancer in their family may still have a higher risk of getting the disease. That's according to a new study from the American Association for Cancer Research.
(CBS News) -- Women who test negative for the gene mutation that causes breast cancer in their family may still have a higher risk of getting the disease. That's according to a new study from the American Association for Cancer Research. Previous research said women from families that have the BRCA2 mutation who test negative for the mutation have the same risk of getting breast cancer as all women in the general population. But new research suggests they are four times more likely to develop breast cancer.

Steroid injections given to pregnant women ahead of premature delivery may increase a baby's risk of behavioral problems later on. Doctors often give steroids to mothers before they deliver early to help the baby's lungs develop. Researchers in London and Finland found the drug may increase the risk of disorders including ADHD but they say the immediate benefits of steroids on a baby's health outweigh possible long-term risks.

Regular physical activity later in life boosts the likelihood of healthy aging up to seven times. British researchers found even those who started exercising late in life saw significant health benefits, they were more than three times as likely to be healthy seniors compared to those who did nothing.
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