#23 Not Getting Enough Sun
This could seem like a puzzle – too much or too little of the sun can both put us at a risk of cancer! But how does too little sun put us at risk? The answer is the resultant lack of Vitamin D.
Moderate exposure to the sun is the easiest (and free!) source of Vitamin D. This vitamin plays a crucial role in regulating our immune system, and a lack of it has been linked to a risk of cancer and autoimmune diseases.