Does a Low Glycemic Diet Work in Your 70s and 80s?
It works, and in some ways it matters more at this stage than it did at 50 — with two adjustments that make it genuinely different.
"I am in my 70s. Will this work for me?"
Yes — and I'd go further. Several things about this approach become more relevant with age, not less.
Why it fits this stage well
No counting, no weighing, no logging. It's a rhythm rather than an arithmetic exercise.
No food group removed. Nothing here requires you to give up bread or fruit, which is what makes restrictive plans so hard to sustain across decades and family occasions.
It bends. Around a cruise, a hospital stay, a grandchild's birthday. You pick it back up at the next meal rather than starting over.
The two adjustments that genuinely matter
Protein goes up, not down. The muscle loss that comes with age is the thing most worth resisting, and the per-meal threshold for older adults is higher than for younger ones — 25 to 30 grams per meal.
That's harder to reach when appetite is smaller, which is exactly why it needs deliberate attention. A UK study of adults aged 65 to 89 found only one participant hitting that mark across three meals.
Density over volume. With a smaller appetite, what you do eat has to carry more. This is the opposite of the advice given to a 40-year-old trying to eat less.
On the physical side
Exercise recommendations that assume you can walk briskly for thirty minutes are not useful with arthritis, an old injury or limited mobility.
What helps and is usually available: standing up more often, a few minutes of gentle movement after meals rather than one long session, and any resistance work you can do safely — seated, with bands, or against a wall. Muscle responds at every age.
What tends to change first
Not the scale. Energy, usually — the afternoon flattening out, sleeping better, the constant background negotiation about food going quiet.
One honest note
If you're in your eighties and not overweight, weight loss is probably the wrong target entirely. Maintaining weight and muscle is usually the more important goal, and the structure works just as well pointed at maintenance — bigger portions, same shape.
Try this week: measure your breakfast protein honestly for three days. That's where nearly everyone at this stage is short.
Education, not medical advice.
Sources
- Bauer J, Biolo G, Cederholm T, et al. Evidence-based recommendations for optimal dietary protein intake in older people: PROT-AGE position paper. *JAMDA* 2013 View source
- Inadequacy of protein intake in older UK adults. *Geriatrics* 2020 View source