Changes in lipoprotein(a) levels and hormonal correlations during a weight reduction program

Area of Science:

• Endocrinology
• Cardiovascular Health
• Metabolic Syndrome

Background:

• Elevated serum lipoprotein(a) [Lp(a)] is a risk factor for cardiovascular disease.
• Weight reduction is often recommended for obese individuals to improve metabolic health.
• The impact of weight loss programs on Lp(a) levels and the role of hormonal changes are not fully understood.

Purpose of the Study:

• To investigate the effect of a weight reduction program on serum Lp(a) levels.
• To determine if hormonal changes during weight loss mediate alterations in Lp(a) levels.

Main Methods:

• A longitudinal clinical intervention study involving 62 healthy obese patients.
• Participants followed a low-calorie diet for six weeks.
• Measurements included anthropometric parameters, serum lipids, hormones, sex hormone-binding globulin (SHBG), and blood sugar at baseline and after treatment.

Main Results:

• A 7.5% average weight loss was achieved.
• Significant reductions in total cholesterol, LDL-cholesterol, HDL-cholesterol, and triglycerides were observed.
• No overall change in Lp(a) levels was noted, but a 17.6% reduction occurred in subjects with high baseline Lp(a) (> 20 mg/dL).
• Lp(a) reduction correlated with initial Lp(a) levels but not with anthropometric or hormonal changes.

Conclusions:

• A low-calorie diet and subsequent weight loss can improve serum Lp(a) levels in obese individuals with high baseline concentrations.
• The observed beneficial effect of weight loss on Lp(a) appears to be independent of hormonal modifications during the weight reduction period.