With fall fast approaching, cold and flu season isn't far behind. For many people who want to avoid getting sick, frequent hand washing and steering clear of crowds has already become a priority. However, there's one crucial step toward protecting your immune system that many people aren't taking: revamping your eating habits . If you want to protect your wellbeing, read on to discover the eating habits that could be wrecking your immune health, according to experts. And if you want to keep your body healthy, check out The One Vitamin Doctors Are Urging Everyone to Take Right Now . 1 Eating too much sugar Those sugary pumpkin lattes and Halloween cookies could be wreaking havoc on your immune health. " Excess intake of sugar and simple carbohydrates can reduce immune cell function and weaken the immune system," explains Lindsey DeSoto RDN, LD , of Fit Healthy Momma . If you want to give your immune system a leg up, This One Diet Can Protect Your Immun