This is a great question! Evolution is constantly changing all living things on the planet – the same thing applies to humans. This change is really really slow though, so we won’t be able to see the consequences of it in a long time.
Other things that can change our bodies more immediately are related to the modern lifestyle and how it affects us. For example obesity is getting more and more common, because there is a lot of food available and we sit a lot. This quite often carries over in a family. Another example would be how eyesight in western societies is gradually getting worse – more people need glasses now than did in the past.
On the other hand, technology and medicine develop really fast and we are able to fix and change more things in our bodies than we used to, and this trend is continuing.