In the world of health, information is changing all the time. Scientists are constantly researching cures for diseases, conducting studies that help us better understand the human body and sifting through current health advice to see what strategies are actually going to help us live longer, healthier lives. It can be hard to keep up on it all. That’s why I’ve decided to check in on the latest in health news once a week to round up the most relevant studies that you need to know to keep yourself well. Here are three of this week’s most important stories. 1. Swimming is good for the brain. A new study out of Australia has found that activities in which you’re submersed in water (at least up to the level of your heart) increase blood flow to the brain, improving cognitive function. Since this finding is the first of its kind (most studies about different activities have focused on heart health benefits in the past), researchers are planning to follow up with more studies about the potential benefits for the brain. But we do know there are some connections between heart and brain health. Find out more ways to care for your brain. 2. Stress puts a strain on fertility. Results of a U.S. study say those struggling to conceive might find that stress is behind their pregnancy problems. When researchers recorded levels of a stress-related enzyme in 500 women from ages 18 to 40, they found those with the highest levels of the enzyme were 29 percent less likely to get pregnant. Though stress is certainly not the only factor, as there are often bigger biological issues at play in infertility, it’s important to take it into consideration. If you’re stressed and having trouble conceiving, consider meditation or other proven relaxation techniques. 3. If you’re active, your kids will be too. Research published in the journal Pediatrics compared the activity levels of over 500 kids with their moms. The more active moms were more likely to have active children. It should create a good incentive for parents to get moving; they won’t just be benefitting themselves but their kids as well. The study author says this incentive is important, since activity levels are known to decrease in adulthood, particularly after people have children. Get moving with these ideas for fun family fitness. (Photography: Thinkstock) You might also like:What part of your brain do you exercise with? Health headlines: Fat shaming discourages wei... Health headlines: Is poor sleep shrinking you... Health headlines: Can exercise make your kids... Can too much exercise be bad for you?