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What causes big hips? A comprehensive guide to body shape

4 min read

Did you know that genetics can account for up to 50% of your body's fat distribution? This inherent predisposition is a major factor when exploring what causes big hips, alongside hormonal shifts and lifestyle influences throughout life.

Quick Summary

The size and shape of a person's hips are determined by a complex interplay of genetic blueprint, bone structure, hormonal changes (especially estrogen), and patterns of fat and muscle distribution. Lifestyle choices, age, and certain medical conditions also contribute to this defining aspect of one's physique.

Key Points

  • Genetics matter: Your DNA determines a large portion of your body's fat distribution, including a predisposition for wider hips and thighs.

  • Hormonal shifts: Estrogen plays a key role, particularly during puberty, pregnancy, and menopause, in influencing hip and fat development.

  • Bone structure evolves: Your pelvic bones can continue to widen slightly with age, contributing to a larger hip circumference over time.

  • Lifestyle influences: Diet and exercise can impact overall body fat, but they cannot fundamentally change your underlying skeletal structure.

  • Medical conditions exist: Conditions like lipedema can cause abnormal, diet- and exercise-resistant fat accumulation in the lower body.

  • Body shape is complex: Big hips are not caused by a single factor but are a result of multiple, interconnected genetic, hormonal, and lifestyle elements.

In This Article

Understanding the role of genetics

Genetics are a primary determinant of your overall body shape and where your body tends to store fat. Think of it as your body's blueprint, passed down through generations. Some people are genetically predisposed to a 'pear-shaped' body type, known scientifically as gynoid obesity, where excess fat accumulates primarily in the hips, buttocks, and thighs. This tendency means that even at a healthy weight, an individual might have more pronounced hips due to their familial traits.

The influence of hormones

Hormones, particularly estrogen, play a significant role in shaping the female body during puberty. As estrogen levels rise, they cause the pelvis to widen and direct fat storage to the hips and thighs, a biological adaptation historically linked to preparing the body for childbirth.

Hormonal changes throughout life

  • Puberty: The most dramatic effect of estrogen occurs during adolescence, triggering the widening of the pelvic bone structure and establishing initial fat distribution patterns.
  • Pregnancy: Hormonal shifts during pregnancy further influence fat storage, especially around the hips, to provide energy reserves for the fetus.
  • Menopause: As estrogen levels decline during and after menopause, fat distribution can shift from the hips and thighs toward the abdomen, mimicking the male-pattern (android) fat storage.

Skeletal structure and aging

Beyond genetics and hormones, the underlying bone structure of the pelvis dictates the foundational width of the hips. While often thought to be fixed after puberty, research has shown that the pelvic bones can continue to widen with age. A study found that the pelvic width of older adults (70-79) was, on average, wider than that of younger adults (20-29), contributing to a larger waist and hip circumference over time.

Comparison of fat distribution patterns

Feature Gynoid (Pear-shaped) Fat Distribution Android (Apple-shaped) Fat Distribution
Primary Fat Location Hips, buttocks, and thighs Abdomen, waist, and chest
Hormonal Influence High estrogen levels High cortisol and low sex hormones
Associated Gender More common in women More common in men
Health Implications Lower risk of certain heart diseases compared to android fat, but higher risk for conditions like varicose veins and osteoarthritis Higher risk of cardiovascular disease, diabetes, and other metabolic issues

Lifestyle and its impact

While genetics and bones provide the framework, lifestyle choices influence the amount of fat and muscle that contribute to hip size. A sedentary lifestyle with insufficient physical activity and a diet high in processed foods and excess calories can lead to overall weight gain. Since many individuals have a genetic predisposition to store fat in their lower body, this lifestyle can exacerbate the appearance of big hips.

The importance of diet and exercise

  1. Balanced Diet: Focus on whole foods, lean proteins, healthy fats, and plenty of fruits and vegetables to maintain a healthy weight and support overall health.
  2. Regular Exercise: A combination of aerobic exercise (like cycling or running) and strength training (like squats and lunges) can help manage overall body fat and tone the muscles in the hip and gluteal areas. However, remember that exercise can't change your bone structure.
  3. Stress Management: High levels of stress hormone, cortisol, can contribute to visceral fat accumulation, typically around the abdomen, but managing stress is beneficial for overall weight control.

Medical conditions affecting hip size

In some cases, a medical condition is the primary cause of disproportionately large hips. One such condition is lipedema, which causes an irregular and painful buildup of fat in the lower body, including the hips, buttocks, and thighs. Unlike regular weight gain, the fat from lipedema is resistant to diet and exercise and does not affect the hands or feet. This condition is almost exclusively seen in women and often becomes more pronounced during hormonal changes like puberty or pregnancy.

Seeking professional guidance

If you have concerns about the size or shape of your hips, especially if you suspect a medical condition like lipedema, it is crucial to consult a healthcare professional. A doctor can help rule out underlying conditions and provide personalized advice on how to maintain a healthy weight and body composition. For more authoritative health information, you can also consult resources like the Cleveland Clinic's health library for a deeper understanding of conditions like lipedema: https://my.clevelandclinic.org/health/diseases/17175-lipedema.

Conclusion

Big hips result from a complex mix of inherent and acquired factors. Your genetic makeup and bone structure provide the foundational blueprint, while hormones amplify and guide fat storage patterns, especially for women. Age, lifestyle choices regarding diet and exercise, and specific medical conditions like lipedema can all play a role. Ultimately, understanding the unique blend of these elements offers a more holistic view of what shapes the human body.

Frequently Asked Questions

Not necessarily. While weight gain can increase hip size, many people with a 'pear-shaped' body type have naturally larger hips due to genetics and bone structure, even at a healthy weight. Fat distribution varies from person to person.

Exercise can reduce overall body fat and tone the muscles in your hips and glutes, which may lead to a smaller measurement. However, exercise cannot change the width of your pelvic bone structure.

Yes, hormones, particularly estrogen, are a major driver of hip widening during puberty and influence fat storage patterns in the hips and thighs. This hormonal effect is a key reason many women have wider hips than men.

Yes, studies show that pelvic bones can widen slightly as a natural part of the aging process, independent of weight gain. This can contribute to a larger hip measurement over time.

Hip fat is a normal accumulation of body fat, while lipedema is an abnormal and often painful buildup of fat in the lower body that resists diet and exercise. Lipedema is a medical condition and should be evaluated by a healthcare professional.

While the pelvic widening effect of estrogen is typical for most women during puberty, the degree to which it occurs is genetically variable. Not every woman develops significantly wider hips, and some have narrower bone structures.

A pear-shaped body (gynoid fat distribution) is generally considered to be associated with a lower health risk compared to an apple-shaped body (android fat distribution). However, excessive weight in any form can increase certain health risks like joint problems.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.