Egg and dairy can feel like two very ordinary foods until the word allergen enters the conversation. Then breakfast comes with a second layer of questions: when did other families record them, how common were they, and does an app entry say anything about safe introduction?
We isolated the egg and dairy series from Tummi's cumulative allergen analysis. These two groups had the widest recorded reach by the end of month 6, and they stayed in the top two positions at every published age through month 9.
That is a strong age pattern, but it is not an explanation of family decisions. The data cannot confirm first introduction, serving form, dose, tolerance, or reaction. It can show how two grouped allergens appear across babies' recorded menus.
Key Findings
- Egg appeared in 42.5 percent of eligible profiles by the end of month 6.
- Dairy appeared in 33.8 percent by the same milestone.
- Egg had the widest recorded reach at every published age from month 6 through month 9.
- Dairy remained second throughout the same window and drew closer to egg by month 9.
- The pattern describes cumulative app records, not confirmed introduction dates or clinical adherence.
Which two groups lead by the end of month 6?
Egg appears in 42.5 percent of eligible histories by month 6, and dairy appears in 33.8 percent. No other tracked allergen group reaches either level at that milestone. Wheat or gluten-tagged foods, the next group, appears in 20.5 percent.
The comparison establishes reach within the available history. It does not show that nearly half of all babies everywhere had egg by month 6, and it does not confirm the date of an individual baby's first serving. The denominator is the eligible Tummi cohort for each age.
| Allergen | 6 mo | 7 mo | 8 mo | 9 mo |
|---|---|---|---|---|
| Egg | 42.5% | 59.6% | 70.1% | 73.9% |
| Dairy | 33.8% | 53.0% | 62.5% | 70.6% |
Source: Aggregated Tummi product data. Samples change by age. Later age cells are withheld because the eligible group becomes too small.
Does the early lead persist through month 9?
Yes. Egg reaches 59.6 percent at month 7, 70.1 percent at month 8, and 73.9 percent at month 9. Dairy reaches 53.0 percent, 62.5 percent, and 70.6 percent at the same milestones.
Both cumulative series rise, and neither falls behind another tracked group. The pattern is not a single-month result created by one threshold. It remains visible across four consecutive published ages in the eligible Tummi data.
How does the distance between egg and dairy change?
Egg leads dairy by 8.7 percentage points at month 6. The difference is 6.6 points at month 7, 7.6 at month 8, and 3.3 at month 9. Dairy comes closer by the end of the published window, although it does not pass egg.
A narrowing gap should not be read as families following one shared schedule. Cumulative percentages can move as new records enter each series, and the eligible group can change by age. The chart compares aggregate histories rather than tracing a controlled sequence for every baby.
Do egg and dairy foods also appear in the top-food ranking?
They do, under a different measure and study window. Egg ranks second among the ten foods with the widest profile reach in the main 2026 meal cohort. Yogurt, one dairy food, ranks seventh. That separate ranking is consistent with egg and dairy foods appearing broadly on recorded menus.
The analyses should not be merged into one percentage. The top-food report asks whether a named food appeared at least once during a fixed window for profiles ages 6 to 12 months. The allergen chart uses cumulative grouped history at age milestones. Similar direction does not make the denominators identical.
What does current guidance add that the records cannot?
The American Academy of Pediatrics offers parent-facing guidance on readiness, timing, and baby-safe forms for common allergens. That material is designed to help with feeding decisions, while this report is designed to describe what appears in a product dataset.
A record cannot individualize risk. If your baby has severe eczema, a known allergy, a previous reaction, or another clinical concern, ask your pediatrician or allergist how general guidance applies. The fact that egg and dairy lead an aggregate chart does not determine the right next food for one baby.
What does an early recorded lead fail to prove?
It does not prove that egg or dairy was introduced first, served more often, offered in a larger amount, or better tolerated. It does not reveal the form of the food, the setting of the meal, or whether a reaction occurred.
It also does not explain the difference from other allergens. Household availability, cultural eating patterns, app taxonomy, clinician advice, and recording habits could matter, but this analysis does not test them. The evidence supports ordering and reach, not cause.
Methodology and limitations
This report uses the egg and dairy rows from the cumulative allergen dataset. The published milestones are the ends of months 6, 7, 8, and 9.
A profile counts for a group once an egg-tagged or dairy-tagged food appears in available history. Repeated records do not change the fact of cumulative presence, and a first record may occur after the actual first serving.
The percentages are calculated within the eligible group at each age. The figure does not publish per-age sample counts, and the age cells should not be treated as identical groups followed under controlled conditions.
No information about amount, preparation, ingestion, tolerance, reaction, diagnosis, or adherence to guidance is used. The categories are product-data groupings rather than clinical assessments.
Months 10 through 12 are withheld because eligible groups are too small for stable comparison. The cohort is self-selected, so the findings describe recorded eating patterns in Tummi rather than all babies or families.
The dataset is self-selected because it describes families who chose to use Tummi. The findings describe aggregated app activity and are not population estimates for every family, baby, or country.
Everything shown here is aggregated. No names, individual profiles, free-text answers, or personal meal histories are published.
Conclusion
Egg and dairy are the clear early leaders in this allergen record. They occupy the top two positions by month 6 and hold them through month 9, with dairy moving closer to egg at the last published milestone.
The result is strengthened by its consistency across ages, not by a theory about why it happened. Caregiver-entered data can establish cumulative recorded reach. It cannot establish first introduction, frequency, serving form, tolerance, or the reasons one group appears more widely than another.
That separation keeps the report useful. The chart answers what the records show, while the American Academy of Pediatrics and your baby's clinician remain the appropriate sources for guidance about readiness, safe forms, and individual risk.
Frequently Asked Questions
Does the month 6 value mean egg was introduced during month 6?
Not necessarily. It means egg appeared on the available recorded menu by that milestone. The actual first serving could have happened earlier and gone unrecorded.
Does dairy mean cow's milk as a drink?
No. Dairy is a grouped food tag in this analysis. The chart does not identify serving form or recommend using milk as a drink.
Why compare egg and dairy separately from the other allergens?
They are the two most widely recorded groups at every published age. The focused view makes that ordering and the changing gap easier to read.
Does wider recorded reach mean lower allergy risk?
No. The analysis does not measure risk, diagnosis, reaction, or tolerance. Recorded prevalence should not be interpreted as a safety rating.
Sources
- Tummi Food Team, 2026. Aggregated Tummi feeding records and onboarding responses. First-party product data.
- AAP allergen introduction guide. Parent-facing clinical context on timing, readiness, and safe allergen serving forms.
- NIAID peanut allergy prevention guidelines. Formal risk-based guidance for early peanut introduction, including higher-risk infants.
- FDA food allergen overview. The U.S. list of nine major food allergens. This study tracks seven grouped allergens.