
Why is this? Because there’s still a lot we don't know about the ins-and-outs of the immune response. This means there’s not just ‘one thing’ we can do (or pill we can take) to boost it.
Instead, we should focus on the only two factors we can control: (1) Defense and (2) Offense – so we can fight viruses and bacteria better, and successfully heal our bodies from within.
The best defense is avoiding or minimizing exposure to germs and viruses. You likely already know about the importance of washing your hands, avoiding contact with those who are sick and avoiding crowded places. However, here are three little-known risk factors you should also be aware of:

Who knows how many people touched the credit card checkout screen before you? Touching the screen with your fingers, or even grabbing the pen stylus means contaminating your hands. Touching these pin pads is dirtier than touching the phones of several strangers.
Solution: Use your credit card corner to push the buttons and tap on the screen, or use your own pen stylus when checking out on a credit card kiosk, or ask the checkout worker to process your purchase without you having to touch the screen.

Door handles are touched daily and are not cleaned often enough, so they get very dirty.
Solution: Open doors with your foot by pushing your toe against the bottom of the door (for push doors) and for pull doors use your shirt to grab the part of the handle others normally don’t touch, like the very top or bottom of the handle, not the middle.

Most people wear shoes inside their house even though studies show over 100,000 different types of bacteria, and even viruses can be found on the bottom of most shoes. This is especially risky if you have pets or kids that come in contact with the floor and then spread the contagions from the floor to the other parts of the house, such as furniture.
Solution: Don't wear shoes in the house! Take them off by the door, and ask your guests to do the same. A simple policy like this could mean the difference between getting sick and staying healthy.
Now that you’re doing everything you can to avoid coming into contact with contagions, the other part of the equation is getting your immune system into strong fighting mode. There are several lifestyle recommendations below to keep your immune system strong. In addition, you will find lesser-known, but critical information, on how cellular health, inflammation, and age impact your immune system, along with my pro tips to strengthen it.
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