For years, the rejuvenation of the body was considered a matter of genes: those who were blessed with healthy parents, mature well. Dr. Florence Comite, senior endocrinologist and director of the Comite Center for Precision Medicine & Healthy Longevity (in Manhattan, Palo Alto and Miami) claims otherwise. In her new book "Invincible: Defy Your Genetic Destiny to Live Better, Longer" released in 2026, she presents an approach: genetics is not a sentence. It is a starting point.
The approach: N-of-1
Comite has developed a unique approach called "N-of-1": each patient is a clinical trial in itself. Instead of recommending a uniform diet for everyone, she analyzes for each person:
- Hundreds of blood biomarkers
- Full hormonal profile
- Genetics
- Sleep and physical activity
- Nutrition and habits
So she adapts a personal strategy. But from the thousands of patients she has treated, universal patterns emerge. Here are the 7 habits that according to her approach everyone should adopt.
Habit 1: Check your markers, don't guess
People say "I feel healthy" or "I eat well" but do not know what is happening in reality. Comite claims that at least once a year comprehensive tests should be done:
- Full metabolic profile: HbA1c, fasting insulin, extended lipid profile
- Hormones: testosterone, estrogen, cortisol, TSH
- Inflammatory markers: hs-CRP, IL-6
- vitamin markers: D3, B12, iron
Habit 2: Sleep is the biggest lever
"If I had one medicine to give to all my patients," says Comit, "it would be a quality night's sleep." 7-9 hours of continuous sleep restores hormones, removes waste from the brain (glialamp system), and builds memory.
Habit 3: protein at every meal (especially after the age of 40)
The needs of a body change with age. At the age of 25, the body builds muscle mass from a relatively low protein intake. At age 50, the same amount of protein is not enough. Comite recommends a minimum of 1.2-1.6 grams of protein per kilogram of body weight per day, divided into 3-4 meals.
Habit 4: Resistance training twice a week (at least)
Aerobic training is good for the heart, but resistance training (weights, bands, or body weight) is protective against sarcopenia and osteoporosis. After the age of 30, we lose 1-2% of our muscle mass per year, unless we actively fight it.
Habit 5: Hormone management during menopause
Comite supports hormone replacement therapy (HRT) in appropriate cases, especially estrogen in menopausal women. The new studies show that when HRT is started in the "golden" window (within 10 years of the onset of menopause), the benefits outweigh the risks.
Habit 6: Continuous cognitive stimulation
"Use it or lose it". The mind, like the muscle, needs a challenge. Learning a new language, playing a musical instrument, solving puzzles, complex social interaction. All of these increase the cognitive reserve.
Habit 7: Active stress management
Chronic stress increases cortisol, shortens telomeres, damages the immune system, and accelerates aging. Commit recommends daily tools: meditation, deep breathing, yoga, or CBT therapy if necessary.
The bottom line
"Genetics may determine the starting point," says Comit, "but how you live, what you eat, and how you manage your body will determine how far you will go." These 7 habits are not revolutionary. They are simply consistent and based on science. And that's what works.
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