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Find Hormonal Harmony Naturally--No Added Hormones, Just Your Body's Own Power

Find Hormonal Harmony Naturally--No Added Hormo...

The hot flashes, the night sweats, the low energy and mood. Think you just have to learn to live with your menopause symptoms? If you’ve been an HSI member for...

Find Hormonal Harmony Naturally--No Added Hormo...

The hot flashes, the night sweats, the low energy and mood. Think you just have to learn to live with your menopause symptoms? If you’ve been an HSI member for...

Do You Have a Darkness Deficiency? Take Our Circadian Quiz

Do You Have a Darkness Deficiency? Take Our Cir...

Our bodies evolved over millions of years to develop a natural circadian rhythm based on light and dark—day and night. Through the circadian rhythm, humans can produce vitamin D from...

Do You Have a Darkness Deficiency? Take Our Cir...

Our bodies evolved over millions of years to develop a natural circadian rhythm based on light and dark—day and night. Through the circadian rhythm, humans can produce vitamin D from...

The Hidden Health Costs of Daylight Saving Time and Exactly How to Overcome Them

The Hidden Health Costs of Daylight Saving Time...

Did you know that moving our clocks ahead by just one hour each spring dramatically impacts our health? It’s easy to think of Daylight Saving Time (DST) as a minor...

The Hidden Health Costs of Daylight Saving Time...

Did you know that moving our clocks ahead by just one hour each spring dramatically impacts our health? It’s easy to think of Daylight Saving Time (DST) as a minor...

Melatonin - How to make sure you get what you paid for

Melatonin - How to make sure you get what you p...

Understand the different sources of melatonin and how to ensure you select a quality  and efficacious product. 

Melatonin - How to make sure you get what you p...

Understand the different sources of melatonin and how to ensure you select a quality  and efficacious product. 

No, a Handful of Cherries Won’t Help You Sleep: Why Food Sources of Melatonin Fall Short

No, a Handful of Cherries Won’t Help You Sleep:...

You may have seen several posts on social media about food, particularly pistachios, cherries, and bananas, having high levels of melatonin. We've seen a number of posts claiming that you...

No, a Handful of Cherries Won’t Help You Sleep:...

You may have seen several posts on social media about food, particularly pistachios, cherries, and bananas, having high levels of melatonin. We've seen a number of posts claiming that you...

Even if Your Melatonin Says “Natural” it May Not Come From a Plant

Even if Your Melatonin Says “Natural” it May No...

There are at least three different sources of melatonin. This supplement is derived from animal, synthetic, or plant sources. Each can dramatically impact their effectiveness and even safety.

Even if Your Melatonin Says “Natural” it May No...

There are at least three different sources of melatonin. This supplement is derived from animal, synthetic, or plant sources. Each can dramatically impact their effectiveness and even safety.