FRIDAY, Nov. 9 (HealthDay News) -- Many people believe that this was the worst year for hay fever, but seasonal allergies will get worse as pollen counts more than double over the next 28 years, a new study predicts.

FRIDAY, Nov. 9 (HealthDay News) -- Children in more affluent families are more likely to develop peanut allergy, a preliminary study suggests.

FRIDAY, Nov. 9 (HealthDay News) -- The number of emergency room visits and hospitalizations caused by a life-threatening allergic reaction called anaphylaxis could be reduced if people with allergies took proper preventive measures, according to a new study.

(HealthDay News) -- The crisp fall weather and colorful leaves make great reasons to get outside and exercise.

(HealthDay News) -- Beans, peas and lentils are examples of legumes -- nourishing foods that pack a lot of energy.

FRIDAY, Nov. 9 (HealthDay News) -- A new study of Dutch teens finds that few of them frequently engage in risky online activity related to sex, such as sending naked photos to strangers and searching for sex partners, but those who do are more prone to have casual sex in real life.

FRIDAY, Nov. 9 (HealthDay News) -- Women's respiratory symptoms -- such as wheezing, coughing and shortness of breath -- vary significantly during different stages of the menstrual cycle, a new study says.

FRIDAY, Nov. 9 (HealthDay News) -- Women with treated and untreated bipolar disorder are more likely to give birth prematurely -- before 37 weeks -- and have other pregnancy and birth complications, according to a new study.

FRIDAY, Nov. 9 (HealthDay News) -- New research adds to a growing body of evidence that suggests certain tick bites may cause even the most seasoned of carnivores to develop an allergy to red meat.

FRIDAY, Nov. 9 (HealthDay News) -- Doctors often ignore or misunderstand what patients want in terms of treatment, and this "preference misdiagnosis" can be harmful to patients, experts say.

FRIDAY, Nov. 9 (HealthDay News) -- Early new research offers some hopeful findings for parents of children with food allergies.

Here are some of the latest health and medical news developments, compiled by the editors of HealthDay: