Best Supplements to Take During Cold and Flu Season
Vitamin D correction (if deficient) is a foundational preventive step, while high-dose zinc and elderberry are better suited to active symptom treatment.
- Longevity
Signs of a Weak Immune System
Frequent infections, slow wound healing, and chronic fatigue can indicate immune dysfunction, though these signs overlap with many other conditions.
- Longevity
Elderberry vs Echinacea: Which Works Better?
Elderberry's meta-analysis results point consistently one direction; echinacea's over 2,000-participant evidence base is genuinely split. Here's the honest comparison.
- Longevity
Best Herbs to Take at the First Sign of a Cold
Elderberry has the more consistent trial data for symptom duration, though study quality is limited across the board. Timing matters more than which herb.
- Longevity
Best Vitamins and Minerals for Immune Support
Vitamin D and zinc have the most direct clinical trial support for immune function, particularly for those with deficiency or during active infection.
- Longevity
Myo-Inositol for Fertility and Hormonal Health
A meta-analysis of 17 studies found myo-inositol/D-chiro-inositol supplementation significantly improved pregnancy rates and embryo quality in women with PCOS undergoing ART.
- Longevity
Best Supplements for Insulin Resistance and Blood Sugar
Berberine reduced HOMA-IR by up to 73% in one trial, with mechanisms comparable to metformin. Chromium and magnesium offer complementary support.
- Longevity
Spearmint for PCOS: What the Research Shows
A randomized trial found spearmint tea lowered free testosterone in women with PCOS over 30 days. Here's what the evidence supports and its limits.
- Longevity
Best Supplements for PCOS
Myo-inositol at a 40:1 ratio with D-chiro-inositol has the strongest fertility trial data for PCOS, with spearmint tea and berberine offering complementary support.
- Longevity
Best Herbs for Menopause Symptoms
Black cohosh's evidence for hot flashes is genuinely mixed, some trials positive, some no better than placebo. Here's an honest look at the leading...
- Longevity
Zinc for Immunity: What the Evidence Actually Shows
Zinc's cold-duration benefit is real but dose-dependent: trials show a 33-35% reduction only at 80mg+ daily, with no effect below 75mg.
- Longevity
How Vitamin D Affects Your Immune System
Vitamin D induces antimicrobial peptides and modulates immune cell function through receptors on nearly every immune cell type. Benefits are clearest in deficiency.
- Longevity
What Is Urolithin A?
Explains Urolithin A, why not everyone produces it from food naturally, and what randomized trials show for muscle strength and mitochondrial health.
- Longevity
Resveratrol vs Pterostilbene
Compares trans-resveratrol and pterostilbene as sirtuin-activating polyphenols, covering bioavailability differences and what human data supports for each.
- Longevity
The Longevity Supplement Stack
A practical framework for building a longevity stack around distinct hallmarks of aging, using NR, resveratrol, spermidine, Urolithin A and CoQ10.
- Longevity
Autophagy 101
Explains autophagy, the body's cellular cleanup process, and what fasting, exercise and spermidine each contribute according to current research.
- Longevity
Best Senolytic Supplements
Covers fisetin and apigenin as senolytic candidates, what current human trials show, and why senolytics may work best in people with a confirmed senescent...
- Longevity
What Is Cellular Senescence?
Explains cellular senescence, the SASP inflammatory secretion, and the current state of senolytic research targeting these cells in humans.
- Longevity
How to Slow Aging Naturally
An overview of the hallmarks of aging targeted by NAD+ precursors, resveratrol, spermidine, fisetin and Urolithin A, with honest evidence levels for each.
- Longevity
Can Diet and Supplements Really Lengthen Telomeres?
Covers what telomeres are and what the VITAL trial found about vitamin D3 versus omega-3 for telomere preservation over four years.
- Longevity

