Stephen Sinatra, MD, cardiologist and best-selling author of nearly two dozen books on natural health and healing says while spring is the time when people start to talk about allergies a new study suggests that temperature increases lead to more pollen production, which can be a major irritant for those with respiratory issues like asthma, and in short, 2021 could be the longest, most intense allergy season yet. For people with major lung issues like asthma, allergens like pollen exposure can be a major threat to their physical health and ability to breathe. Research shows that pollen exposure weakens your immune system’s ability to fight off respiratory illnesses. Allergies affecting the lungs could eventually lead to heart disease. Studies show that intermittent inflammation created by allergies could result in the thickening of artery walls, which could then lead to heart disease. Dr. Sinatra returns to Late Night Health to update Mark Alyn..