Posts in Lifestyle & longevity

Design daily habits that support hormonal balance and long-term vitality. Master sleep and circadian timing, eat for metabolic stability, and use micronutrients with purpose. Make informed choices about alcohol, nicotine, sauna, and cold exposure. We translate longevity research into clear, practical playbooks you can apply today.

Does diet coke break a fast? What the science actually says

Does diet coke break a fast? What the science actually says

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Nov 29, 2025 · 14 min read

Diet soda has almost no calories, so most people assume it is “fasting safe.” The real answer is more nuanced: diet coke will not technically break a fast, but it can still nudge hormones, hunger, and some of the very benefits you are fasting for. “From a pure calorie standpoint, diet soda does not break ...

Optimal vs normal: why “in range” blood tests can still miss what your body needs

Optimal vs normal: why “in range” blood tests can still miss what your body needs

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Nov 29, 2025 · 13 min read

Many men are told their blood work is “normal” even though they feel tired, softer, and off their game. Understanding optimal vs normal lab ranges can turn a frustrating dead end into a clear plan to feel and perform better. “When a lab report says ‘normal’, it mostly means you’re not in immediate danger. It ...

Nad+ side effects: what science really says about safety, injections, and anti-aging hype

Nad+ side effects: what science really says about safety, injections, and anti-aging hype

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Nov 29, 2025 · 13 min read

NAD injections are marketed as a shortcut to better energy, sharper focus, and longer life. The science is promising but early, and there are real limits, costs, and side effects you should understand before you sign up for NAD shots. “NAD+ is central to how your cells make energy and repair damage, so it makes ...

Is Propel water healthy or just clever marketing?

Is Propel water healthy or just clever marketing?

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Nov 28, 2025 · 9 min read

For many, Propel represents the perfect middle ground between plain tap water and sugar-loaded sports drinks. But does removing the sugar make it completely safe, or do artificial ingredients carry hidden risks for your metabolism and gut? “Hydration is about more than just fluid volume; it is about maintaining a delicate electrolyte balance without disrupting ...

Protein gummies: smart shortcut or sugary trap for your gains?

Protein gummies: smart shortcut or sugary trap for your gains?

Dr. Bruno Rodriguez, DPT, CSCS avatar
Dr. Bruno Rodriguez, DPT, CSCS: Strength, Recovery, and Physical Therapy Expert
Nov 28, 2025 · 14 min read

Protein gummies promise muscle support in candy form, but the science says you need to look hard at the label before you trust them with your recovery and appetite goals. “Protein gummies can absolutely play a role in a smart nutrition plan, but you have to treat them as a supplement, not a free pass ...

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