Why bone is a master communicator and not just a frame

Bone is metabolically active and secretes hormones like osteocalcin that influence brain function, insulin sensitivity, muscle glucose uptake, and even testosterone production in men. One in two women will experience an osteoporotic fracture, 70% of hip fractures occur in women, and after a hip fracture 50% never regain previous function and 30% die from complications. Action: get a DEXA scan well before 65 if you have risk factors (family history, fractures, steroids, smoking, midlife height loss) and prioritize impact exercise plus adequate calcium, vitamin D, and magnesium.

The ages 35–45 are pivotal for both sexes: women are entering perimenopause and men begin hormonal and metabolic shifts. This is when you should: 1) establish baseline labs (fasting glucose, HbA1c, lipids, inflammatory markers, testosterone for men), 2) maximize VO2 max with structured cardio, and 3) aggressively build muscle through resistance training. Starting with higher muscle mass, bone density, and aerobic fitness gives you more runway before hitting the “frailty line” later in life.

Skeletal muscle is an endocrine organ that, when contracted, releases longevity- and resilience-promoting molecules like klotho, galanin, and irisin. Dr. Wright recommends ~1 gram of protein per ideal pound of bodyweight, prioritizing high-leucine sources (whey/dairy or larger volumes of plant proteins) and structured resistance work: at least 2 sessions/week total-body. For longevity and power: lower reps, heavier weights (e.g., ~4 sets of ~8 reps for midlife men, ~4x4 heavy for trained midlife women), progressing gradually from bodyweight and bands.

Loss of estrogen is inevitable; osteoporosis is not. Studies in masters athletes show that long-term participation in “bounding” sports (running, basketball, volleyball, gymnastics) preserves bone density well into the 80s and that impact loading is as important as age and sex in predicting bone density. Even breastfeeding and perimenopause—times when women can lose 20% of bone density if under-fueled—can be mitigated by adequate calcium (≈500 mg/day extra in breastfeeding), nutrition, and continued impact and strength training.

A fasting glucose around 110 mg/dL and HbA1c near 6.0 indicate prediabetes and confer a 70–100% chance of developing full diabetes within 10 years. Dr. Wright stresses that prediabetes should trigger “running and screaming to get healthy,” not casual advice to “exercise a bit more,” because diabetes is strongly linked to Alzheimer’s (sometimes called the third phase of diabetes). Action: use lab data and, if possible, a continuous glucose monitor to aggressively adopt resistance training, base cardio, sprints, and anti-inflammatory, lower-glycemic nutrition.