2. Exposure to sunlight lowers blood pressure
Scientists have known for some time that sun exposure lowers blood pressure, but recently researchers have figured out why. They discovered that nitric oxide in the skin reacts with sunlight and widens the blood vessels. This introduces nitric oxide into the blood stream. This in turn lowers blood pressure. Lower blood pressure leads to lower heart risk. Those who constantly use sunscreen or completely avoid sunlight, as some suggest, may be putting themselves at increased risk of heart disease. Doctors do not recommend prolonged sun exposure but instead recommend a balanced and moderate approach to sun exposure instead.