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Find health guides and all information on metabolic health to feed the curious you.
HRV by Age and Gender: What's Normal for Men vs Women
Heart-rate variability (HRV) is a measure of the small beat-to-beat variation in your resting heart rate, captured overnight by wearables like the …
May 25, 2026
When Does Perimenopause Start? Average Age and Early Signs
When does perimenopause start? Ultrahuman Medical Director Mukul Mittal explains the average age, the normal range, and the early signs that show up …
May 25, 2026
How Low Progesterone Shows Up in Your Sleep, Mood, and HRV
Low progesterone shows up in sleep, mood, and cycle changes — and your wearable can spot the signals. We reveal what to look for and when to test.
May 23, 2026
Perimenopause Tests: Reliability Issues and Accuracy Explained
Can a blood test tell you you're in perimenopause? Ultrahuman Medical Director Mukul Mittal walks through what hormone tests actually measure — and …
May 23, 2026
Implantation Bleeding vs. Your Period — How to Tell the Difference
Spotting before your period? Ultrahuman Medical Director Mukul Mittal walks through the differences between implantation bleeding and a real period — …
May 23, 2026
How to Increase Estrogen: Why It's Not What You Eat, But How Much
The relationship between boosting estrogen and food is often misunderstood. We break down what you need to know
May 22, 2026
Low histamine diet explained and the triggers to be aware of
We explain how a low histamine diet works and the symptoms to look out for
May 22, 2026
Discharge Before Your Period: A Complete Guide to What's Normal
Discharge before your period is normal – but changes in colour or texture can be a sign something's up. Mukul Mittal, Medical Director at Ultrahuman, …
May 22, 2026
Why Breasts May Be Sore or Tender in Perimenopause
Ultrahuman Medical Director Mukul Mittal explains why sore breasts are common during perimenopause - and examines the data
May 22, 2026