1. Genetics: Women have two X chromosomes, while men have one X and one Y chromosome. The X chromosome contains genes for longevity and health-promoting traits. For example, the gene for apolipoprotein E (APOE), which is involved in cholesterol metabolism, is located on the X chromosome. Women who inherit two copies of the APOE4 allele have a higher risk of heart disease, while men with only one copy of APOE4 have a lower risk.

2. Hormones: Estrogen and progesterone, the primary sex hormones in women, have protective effects on the heart, brain, and bones. Estrogen helps to lower cholesterol levels, reduce inflammation, and improve blood flow. Progesterone helps to protect against osteoporosis and uterine cancer.

3. Telomere Length: Telomeres are the protective caps at the ends of chromosomes. They shorten with each cell division, and when they become too short, the cell can no longer divide and dies. Women have longer telomeres than men, which may contribute to their longer lifespan.

Lifestyle Factors

1. Smoking: Smoking is one of the leading causes of preventable death worldwide. Women are less likely to smoke than men, and they are also more likely to quit smoking if they do start.

2. Alcohol Consumption: Excessive alcohol consumption can damage the liver, heart, and brain. Women tend to drink less alcohol than men, and they are also more likely to moderate their drinking if they do drink.

3. Diet: Women are more likely than men to eat a healthy diet that is rich in fruits, vegetables, and whole grains. A healthy diet can help to reduce the risk of heart disease, stroke, cancer, and other chronic diseases.

4. Exercise: Women are more likely than men to get regular exercise. Exercise helps to improve heart health, bone density, and muscle strength. It can also reduce the risk of falls, which can be fatal in older adults.

Social Factors

1. Healthcare Access: Women are more likely than men to have access to healthcare and preventive services. This can help them to identify and manage health problems early on, before they become serious.

2. Support Networks: Women are more likely than men to have strong social support networks. These networks can provide emotional support, practical assistance, and advice on health and well-being.

3. Stress Management: Women are more likely than men to use healthy coping mechanisms to deal with stress. This can help to reduce the risk of developing stress-related health problems, such as heart disease, stroke, and depression.