Just another consequence of growing older. I asked Gemini:
Why do the soles of my feet feel a little sore when I walk barefoot? I never used to feel that way but now I'm 76 years old. My body has changed, maybe the padding of fat on the soles of my feet has decreased. I'm not overweight (70kg and 178cm tall) so there's no great weight bearing down on the soles of my feet. Is this common for older adults?
Here was the response:
You're observing a very common and normal change that occurs with aging! The soreness you're feeling when walking barefoot is highly likely due to the natural reduction of the fat padding on the soles of your feet, a condition often referred to as fat pad atrophy.
Here's a breakdown of why this happens and why it's common for older adults:
- Reduced Fat Padding (Fat Pad Atrophy): This is the most significant factor you've identified. The fat pads on the soles of your feet, particularly under the heel and the ball of the foot (where you bear the most weight), act as natural shock absorbers and cushions. As we age, these fat pads naturally thin, lose elasticity, and their volume decreases. This means there's less natural cushioning between the bones of your feet and the hard ground, leading to increased pressure and soreness when walking barefoot. Even at a healthy weight like yours, this thinning occurs.
- Loss of Collagen and Elastin: With age, the collagen and elastin fibers within the fat pads deteriorate. These proteins are crucial for maintaining the elasticity and thickness of the fat pads. Their decline contributes to the "wear and tear" that reduces the shock-absorbing capacity of your feet.
- Skin Changes: The skin on your feet also changes with age, becoming thinner, drier, and less elastic. This can make the feet more vulnerable to pressure and discomfort.
- Biomechanical Changes: Over decades of walking, your feet undergo cumulative changes. Ligaments and tendons can lose strength and flexibility, and the arches of the feet may flatten. These biomechanical shifts can alter how weight is distributed across your feet, potentially creating new pressure points that become sore when walking without support.
- Increased Sensitivity: With less cushioning, the nerves and other structures in your feet become more exposed and sensitive to direct pressure from hard surfaces.
Is this common for older adults?
Yes, absolutely. Fat pad atrophy and the resulting foot soreness, especially when walking barefoot on hard surfaces, are very common complaints among older adults. It's a natural part of the aging process for many people, even those who are not overweight.
What you can do:
- Wear supportive footwear: This is the most direct solution. Shoes with good cushioning and arch support will help compensate for the reduced natural padding.
- Use insoles or orthotics: Over-the-counter cushioned insoles or custom-made orthotics can provide additional shock absorption and support, redistributing pressure more evenly across your feet.
- Avoid prolonged barefoot walking on hard surfaces: While walking barefoot can have benefits, for many older adults, hard surfaces (like concrete, tile, or hardwood) can exacerbate soreness due to the diminished natural cushioning.
- Gentle foot stretches and exercises: Maintaining flexibility and strength in your foot muscles can help support the foot's structure.
- Moisturize your feet: Keeping the skin on your feet hydrated can help with overall comfort and prevent dryness and cracking.
- Consult a podiatrist: If the soreness is persistent, severe, or significantly impacts your daily activities, it's always a good idea to see a podiatrist. They can accurately diagnose the cause of your pain and recommend personalized treatment options. They can also rule out other potential causes of foot pain, such as plantar fasciitis, metatarsalgia, or nerve issues, which can also become more common with age.
In summary, your observation is spot on – the decreased padding of fat on the soles of your feet is a very likely reason for the soreness, and it's a common age-related change.