Could choices you make before having kids affect their DNA?

Animal study suggests exercise causes changes in sperm DNA and results in offspring that have stronger neuronal connections in the hippocampus, and better learning and memory than those born to sedentary fathers.

There was an interesting study published last year showing that obesity causes epigenetic changes and decreases activation of genes involved in learning and memory in humans. Obese men had sperm DNA that is different from sperm DNA in lean men in 300 genes and many are in the brain affecting learning/memory. Bariatric surgery changes this…sperm DNA looks more like the lean men months later.