Widening of the hip bones occurs as part of the female pubertal process, and sex hormones in females (estrogens) cause a widening of the pelvis as a part of sexual differentiation. Hence females generally have wider hips, permitting childbirth.
So, as you grow taller, your body starts producing all kinds of hormones, which are chemicals that tell parts of your body what to do. During that time of growth, your hips widen (depending partly on what your genes, aka heredity, told them to do!) This widening helps with having babies in your adult years.
For example, as estrogen levels rise after puberty, it prompts the pelvis to widen so that it's at its widest from the ages of 25 to 30–peak fertility years–to make it easier to give birth to human babies, whose large heads need the extra room when getting pushed through the birth canal.
You can now blame your bones. Most people don't grow any taller after the age of 20, but a recent study published in the Journal of Orthopaedic Research found evidence that the pelvis -- the hip bones -- continues to widen in both men and women up to about age 80, long after skeletal growth is supposed to have stopped.
The pelvic width of the oldest people in the study (ages 70 to 79) was, on average, about an inch larger than the youngest people (ages 20 to 29), according to the study. That translates to about a three-inch increase in waist size between someone age 20 and someone age 79.
With the onset of puberty, the male pelvis remains on the same developmental trajectory, while the female pelvis develops in an entirely new direction, becoming wider and reaching its full width around the age of 25-30 years. From the age of 40 onward, the female pelvis then begins to narrow again.
However, both men and women experience a gradual widening of the pelvic bones throughout life. They also hypothesize that much of the widening is remodeling. For one, it may be a response to how bones weaken with age, keeping the pelvis prepared for the substantial pressures it endures.
Changes to the Buttocks, Hips, and Thighs
Extra fat also tends to accumulate around the hips and buttocks. This tends to be more pronounced in women than in men given the gendered differences in fat accumulation and distribution. Widening of the hips and buttocks can lead to a distinct pear shape.
But the main reason for girls' hips to grow after marriage is their physical relationship. When all girls have sexual relations with their husbands after marriage, it causes hormonal changes in their body. It also affects other organs like their waist and hips. After marriage, women's hips gradually begin to grow.
Pass it on: People's hips get wider as they get older not just because of fat, but because their pelvic bones actually grow wider.
Hip widening shouldn't be a noticeable process or cause any discomfort. If you feel your hips are getting wider, but you don't have any pain or other concerning symptoms, you can chalk it up to normal pregnancy processes.
Hormones drive the deposition of fat around the pelvis, buttocks, and thighs of women and the bellies of men. For women, this so-called sex-specific fat appears to be physiologically advantageous, at least during pregnancies.
The differences in hip shape and width are primarily determined by genetics. Hips are made up of bones and soft tissue, and their shape and size are influenced by hormones and the distribution of muscle, fat, and connective tissue.
During puberty, it's common for a woman's hips to widen and for her buttocks to fill out as she grows and develops. At age 13, you are almost certainly not finished growing. Some women get to be 20 years of age before all the changes that happen during puberty take place.
Yes, it can. Brisk walking is considered a good cardio exercise. The idea is to pump up your heart rate. As activities like walking, jogging and running include major leg work, it helps lose those extra kilos.
The best way to reduce hip size is to reduce the amount of fat around them. Fat loss cannot be spot targeted. You cannot decide to lose it from any particular area, but rather must lose weight overall, from your whole body. Where it goes from first will depend more on genetics than anything else.
Wide hips
Wide hips are a sexually dimorphic trait. During puberty, women's hipbones widen to facilitate childbirth. Hips don't lie—wide hips in a woman are a strong signifier to men that she's a mature adult who's very much capable of reproduction.
A combination of things happens as we age. We tend to lose muscle mass, so our abdominal muscles aren't as tight as they once were, and the loss of elastin and collagen in our skin allows gravity to have its way so skin starts to sag. Both can cause the waistline to expand.
A new study finds people continue to grow well into their 70s, but they are growing wider, not taller. Scientists discovered that people's pelvic bones continue to grow long after they reach skeletal maturity. The end result is extra inches at the waistline and many extra pounds on the scale.
Sure, you expect your stomach to grow significantly bigger during pregnancy. However, you may not realize that your ribcage has to expand to accommodate your growing uterus. In addition, your hips also need to widen to provide an easier exit down the birth canal during delivery.