You are shorter than you were a decade ago. Your last physical confirmed it, and the number keeps going in one direction.

Your lower back aches sooner after you sit down than it did five years ago. The stiffness takes longer to ease once you stand.

The cushions between your vertebrae are losing their ability to hold water. How fast that happens is not fixed by your calendar age.

Between each pair of vertebrae sits a disc with a gel-like center called the nucleus pulposus. Its ability to absorb load depends on molecules called proteoglycans, which carry a strong negative charge that pulls water in through osmotic pressure.

Think of that charge as a chemical sponge, holding water by attraction rather than shape. Each day, gravity and activity compress the disc and push fluid out; overnight, the proteoglycans' pull draws it back in.

When proteoglycan content drops with age, the disc cannot fully rehydrate each night. A 2025 systematic review of MRI studies found that after fifty, degeneration accelerates, with measurable loss of disc height, volume, and shape.

A large MRI study of nearly three thousand adults, published in the journal Menopause, found postmenopausal women had more severe disc degeneration than age-matched men, with severity increasing in the first fifteen years after menopause. Estrogen receptors exist in disc cells, and animal research suggests estrogen supports the proteoglycan matrix, though the mechanism in humans is still emerging.

As discs flatten, load shifts onto the facet joints behind each vertebra, producing stiffness and ache. If back pain is persistent, severe, or new, or if you notice sudden height loss, a doctor can check for vertebral fractures or spinal stenosis.

This Common Food Could Be Destroying Your Heart

You could be eating something that seems perfectly healthy…

…without realizing what it may be doing to your arteries.

And the worst part?

It might already be sitting in your kitchen.

Researchers have linked certain everyday foods to increased inflammation, higher blood pressure, and cardiovascular problems.

Even foods labeled “healthy” can contain surprising amounts of sodium, added sugars, or highly processed ingredients.

And eating them regularly may quietly increase your risk over time.

Discover which everyday foods deserve a closer look.

Here's what makes this so easy to miss:

You could exercise regularly…

Watch your weight…

And still overlook something in your daily diet that affects your heart health.

Watch the short video to discover what to look for before your next meal.

Prolonged sitting keeps discs compressed without relief, squeezing out fluid that the weakened osmotic pull cannot fully recover. Standing and changing position every thirty to sixty minutes restores the load-unload cycle the discs depend on for fluid exchange.

A short walk after a long stretch of sitting gives the discs alternating compression and release. The point is not one specific exercise; it is interrupting sustained compression so the discs can draw water back in.

The disc has no blood supply of its own. Every nutrient it receives arrives through this fluid exchange, which is why sustained stillness works against a dehydrating disc.

The answer is partly true. Bone matters, especially when compression fractures are involved, but disc dehydration is a steady and often earlier contributor.

The Baltimore Longitudinal Study of Aging found that height loss begins around age thirty, well before the bone density declines that typically accelerate after menopause. Disc water loss, vertebral changes, and muscle weakening around the spine all play a role.

Start on hands and knees, wrists under shoulders, knees under hips. On an inhale, let the belly drop toward the floor while lifting the tailbone and chest.

On the exhale, round the spine upward, tucking the chin and tailbone. Move slowly, one full breath per direction.

Repeat for eight to ten full cycles, in the morning or after a long stretch of sitting. Each cycle gently compresses and decompresses the discs, encouraging the fluid exchange the mechanism depends on.

Your discs are not drying out on a schedule your birthday sets. How often you move, stand, and change position shapes how much water they hold and how much height you keep.