This week’s How on Earth guest, Dr Doug Seals, researches vascular aging. Several events occur as we age that conspire to damage blood vessels, culminating in what is popularly known as hardening of the arteries. But lifestyle modifications to exercise and diet can prevent and even reverse this trend. This week’s show gives background and mechanisms of this aging; next week’s episode will delve more deeply into solutions and interventions. To find out more about the Seals’ lab research visit their website: https://healthyagingproject.org/