Gender differences in age-related physiological changes and some diseases

Area of Science:

• Gerontology
• Clinical Laboratory Science
• Human Aging Research

Background:

• Understanding physiological changes associated with aging is crucial for healthspan research.
• Centenarians represent a unique population for studying resilience to age-related decline.
• Normative laboratory values in healthy aging populations require ongoing investigation.

Purpose of the Study:

• To compare clinical and laboratory data between healthy elderly individuals (50-89 years) and centenarians.
• To identify age- and sex-related differences in physiological markers.
• To investigate the relationship between these markers and longevity.

Main Methods:

• Cross-sectional and longitudinal study designs were employed.
• Clinical and laboratory data from healthy individuals aged 50-89 and centenarians were analyzed.
• Statistical comparisons were made to identify significant age- and sex-based variations.

Main Results:

• Most clinical laboratory findings were within normal ranges for both healthy elderly and centenarians.
• Age-related changes were noted in erythrocyte sedimentation rate, serum albumin, and rheumatoid factor frequency.
• Significant sex differences were observed in HDL-cholesterol, hematocrit, hemoglobin, creatinine, total cholesterol, immunoglobulins (IgG, IgA, IgM), and antinuclear factor frequency.
• Females exhibited lower hemoglobin and hematocrit, higher total cholesterol, and increased frequency of antinuclear and rheumatoid factors, along with higher systolic blood pressure compared to males.

Conclusions:

• While specific age- and sex-related variations in laboratory markers exist, they do not appear to impede female longevity.
• Healthy aging is characterized by largely normal clinical laboratory findings, even in centenarians.
• Further research into the biological mechanisms underlying sex differences in aging and longevity is warranted.