Skin cancer is the most popular type of cancer with 5.4 billion basal and squamous cell skin cancers diagnosed yearly in the United States. With summer upon us, many people seek to utilize sun screens to protect their skin, but do they really work?
Vitamin D deficiency has been linked to increased risk of asthma, cancer and chronic pain, among other conditions. Now, new study associates low vitamin D levels with greater risk of seasonal affective disorder.