Weight within 90 days
  • 62%

    have lost weight, an average of 3.1 kg (n=393, average of 243 women with weight loss)

  • 32%

    have lost at least 3%. Guidelines recognize health benefits from this point onward, provided the weight is maintained (n=393)

  • 68%

    of women outside the healthy BMI range have moved closer to it, 16% have moved further away (n=237)

1 3

Symptoms

In 53% of the women, more symptoms subsided than worsened within 90 days.

The change was already apparent in the first two weeks. It was most evident in menstrual pain, skin impurities, bloating, mood swings, concentration problems, and lack of energy (n=1,964). In the full report, we explain how we verified each result.

More than just the core figures

What the report also shows

Maintaining weight: 84% were still lighter on day 90

Of the women who had lost weight in the first 30 days, 84% were still more than 0.5 kg lighter at day 90 than at the start. 63% had even lost further weight (n=126). The analysis covers the two months following the initial weight loss and thus describes how well the weight was maintained in the early phase.

Women aged 45 and over: 38% lost at least 3% of their weight

During perimenopause and menopause, metabolism changes. This can make it more difficult to influence weight. In this evaluation, 66% of women aged 45 and older lost weight within 90 days, compared to 57% of women under 45. 38% of women aged 45 and older lost at least 3% of their weight, compared to 24% of women under 45 (n=219 and 173, p=0.007).

Waist: 1 cm less at 45% more

In 45% of the women, waist circumference decreased by more than 1 cm within 90 days, while it increased by more than 1 cm in 11% (n=206, p<0.001, measured by the women themselves).

Mario Aichlseder, CEO of Hello Inside — women’s metabolic health quote

“This year, we checked every symptom result against chance because women deserve evidence they can trust.”

Mario Aichlseder, Co-Founder and CEO of Hello Inside

This is what Hello Inside users have learned about themselves

’’Finally I understand why my cravings get stronger before my period. Seeing my glucose data alongside my cycle has been an eye-opener.’’

Portrait of Agnes (34), Hello Inside user—cravings before her period explained by glucose + cycle tracking
Agnes, 34

’’A salad before the meal and a 10-minute walk afterwards changed everything. Small tricks, huge difference.’’

Portrait of Susan (62), Hello Inside user—salad before meals + 10-min walk after eating helped reduce glucose spikes
Susan, 62

’’I thought my afternoon slump was just part of the deal when you work and have children. Now I know: my blood sugar is reacting to my lunch, and that's something I can do something about.’’

Portrait of Anne (47), Hello Inside user—afternoon crash traced to her lunch-driven glucose response (working mom)
Anne, 47

Medical Efficacy Report, October 2026

Download the full report

All charts, the complete methodology, definitions of the groups, and all 21 sources, free of charge as a PDF.

Download report (PDF, English)

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Frequently Asked Questions

How were the data collected?

We have evaluated anonymized, aggregated data from women who use Hello Inside in their daily lives, up to and including October 4, 2026. Weight data is sourced from Apple Health, the Metabolic Health Assessment, and the Daily Journal; symptom data is sourced from the Metabolic Health Assessment and the Daily Journal.

What does “nachlassen” mean in this report?

Each entry rates a symptom as mild, moderate, or severe. A symptom improves if its severity decreases within 90 days of the first entry (Kendall's tau below zero), and worsens if it increases. For each woman, we compare how many symptoms improved and how many worsened.

Who is included in the data?

Weight: 1,465 women aiming to lose weight with at least 14 CGM days, 393 of whom have a valid pair of weigh-ins. Symptoms: 2,553 women recorded 128,392 symptoms. The main result is based on 1,964 women who recorded the same symptom at least twice during their first 90 days.

Why do the figures differ from previous reports?

This edition uses stricter rules. Weight changes only count if two weigh-ins are at least 60 days apart, and we measure symptom scores at random. This replaces three previous metrics: the proportion of women with improvement in at least one symptom, the days to improvement, and the most improved symptom. The figures are therefore not directly comparable.

Is this a peer-reviewed study?

No. It is a real-world evidence report without a control group. The results show correlations and do not prove that the app caused a change. The PDF contains the complete methodology, definitions, and sources.