A gene associated with Alzheimer's Disease appears to be especially dangerous to women and may explain why more women than men are diagnosed with the disease.

The gene, APOE4, increases the risk of developing Alzheimer's in both genders. But a study published this week in the Annals of Neurology found that the gene had only a minimal effect on men, while nearly doubling the risk of developing Alzheimer's or a related condition in women.

Women make up nearly two-thirds of the 5 million people in the United States diagnosed with Alzheimer's. One factor, experts say, is that women are more likely than men to live long enough to get the disease. But the study shows that there are factors beyond longevity.

Experts: Eat before arguing

Low blood sugar in one or both partners can be bad for marriage.

Researchers say that when caused by hunger, low blood sugar can lead to anger and aggression behavior.

A study involving married couples revealed that spouses should eat before having a difficult conversation.

Long napping could be a symptom

A new study from Cambridge University found that people who frequently take daytime naps of an hour or longer tend to die younger than those who don't take midday naps.

The researchers think that's because people who are tired all the time are prone to have an underlying health problem that's causing the fatigue.

Short siestas of about 30 minutes were not associated with any health problems and have been shown to be helpful for the energy boost they provide.