Harvard Health engagement report
@HarvardHealth - 2.4M followers on X
Measured over 6 original posts from a 30-day window, last computed on October 25, 2026.
Engagement
Early reading. We have captured 6 original posts for this account, below the 8 we require before treating a median as settled. The numbers above describe what we have seen so far, not a finished profile of the account.
A typical post picks up 55 interactions against 2.4M followers, an engagement rate of 0.002%. Posts are seen about 16K times each, and 0.349% of those impressions turn into an interaction. That is about 0.665% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.2 posts a day over the last 30 days, though only 20% of days saw any activity at all. Most posts go out around 14:00 UTC, and Monday is the busiest day of the week. Of the 6 posts sampled, 100% link out. The account's strongest tracked post pulled 1.2K interactions, about 22x its own typical post. Only 6 original posts have been captured so far, fewer than the 8 posts we want behind a median before treating it as settled. Read the figures above as an early measurement of this account, not as a finished profile of it.
Measured over 6 original posts from a 30-day window, last computed on October 25, 2026. Recurring tag: #harvardhealth.
Where this sits in the catalog
At 0.002%, Harvard Health sits below the 10th percentile of the 204,491 accounts in this comparison. That places it in the bottom 25% band, which runs below 0.024%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.004% |
| 25th percentile | 0.024% |
| 50th percentile | 0.143% |
| 75th percentile | 0.677% |
| 90th percentile | 2.55% |
| 99th percentile | 82.4% |
This ruler is the whole measured catalog, not a size-matched group: it shows where the raw rate falls across every account we can measure, all of which are large. For a like-for-like comparison, read the size-band percentile above instead. See how the bands are built
Posting timing
This account posts most often around 14:00 UTC, and Monday is its busiest day of the week. The bars below are the catalog-wide pattern, with this account's own busiest slot marked. They do not show how this account performs at each hour: we keep one aggregate per account, not one per hour, so that measurement does not exist in our data.
Show engagement by hour posted, utc as a table
| Hour (UTC) | Vs author median | Posts |
|---|---|---|
| 00:00 UTC | -1% | 89K |
| 01:00 UTC | -2% | 90K |
| 02:00 UTC | -3% | 88K |
| 03:00 UTC | -4% | 94K |
| 04:00 UTC | -5% | 76K |
| 05:00 UTC | -4% | 75K |
| 06:00 UTC | -5% | 86K |
| 07:00 UTC | -5% | 93K |
| 08:00 UTC | -4% | 108K |
| 09:00 UTC | -4% | 124K |
| 10:00 UTC | -3% | 129K |
| 11:00 UTC | -3% | 141K |
| 12:00 UTC | -3% | 154K |
| 13:00 UTC | -3% | 167K |
| 14:00 UTC | -4% | 173K |
| 15:00 UTC | -2% | 176K |
| 16:00 UTC | -3% | 171K |
| 17:00 UTC | -3% | 159K |
| 18:00 UTC | -2% | 149K |
| 19:00 UTC | -2% | 141K |
| 20:00 UTC | -1% | 131K |
| 21:00 UTC | 0% | 116K |
| 22:00 UTC | -2% | 100K |
| 23:00 UTC | -1% | 90K |
Show engagement by day of week as a table
| Day | Vs author median | Posts |
|---|---|---|
| Sunday | +5% | 393K |
| Monday | +1% | 483K |
| Tuesday | -2% | 520K |
| Wednesday | -3% | 472K |
| Thursday | -2% | 430K |
| Friday | -3% | 447K |
| Saturday | +2% | 393K |
Formats this account uses
Its own posting mix on the left, and what each of those formats does across every account we track on the right. Only formats where the effect clears our publish test appear here, so an empty row is a format we could not measure rather than one that does nothing.
| Format | This account | Catalog effect | 95% interval | Accounts behind it |
|---|---|---|---|---|
| Image or video | 0% of posts | +111% | +108% to +115% | 34K |
| Outbound link | 100% of posts | -41% | -42% to -40% | 32K |
| Typical length | - | no effect | -2% to -1% | 42K |
- 0% of this account's sampled posts carry an image or video. Across the catalog, posts with an image or video run 111% above the same accounts' other posts.
- 100% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts, so a large share of this account's output sits in the weakest bucket we measure.
- Its average post runs 201 characters, which falls in the 180 - 280 characters band. Across the catalog, posts of 180 to 280 characters match the same accounts' other posts almost exactly.
These are catalog-wide differences applied to this account's own posting mix, not a measurement of how each format performs for this account specifically. We keep one median per account, not one per format per account, so the second thing is not something this data can tell you.
Best tweets
- Sep 21, 202622x their median
Evidence is growing that shingles vaccination may do more than just help prevent painful shingles outbreaks, including lowering risk of dementia and slowing biological aging. Now, a study suggests that the current version of the vaccine may also protect the heart. #HarvardHealth https://t.co/2vmgRjt2o5
- Sep 22, 202615x their median
Use of estrogen-only hormone therapy by menopausal women may significantly lower their odds of developing Alzheimer’s-related brain changes or being diagnosed with dementia, according to a study published Sept. 8, 2026, in Neurology. #HarvardHealth https://t.co/A8B3rq8KLz
- Jul 27, 202611x their median
Here’s some good news if you’re a fast walker — and an incentive to pick up the pace if you’re not: findings from a study published July 14, 2026, in Neurology suggest that older adults who maintain a brisk natural walking pace into their 80s and beyond may be protecting their brains. #HarvardHealth https://t.co/AxLmq4O4B6
- Oct 1, 20268.2x their median
Continuous positive airway pressure (CPAP) is the best-known treatment for sleep apnea, a disorder that raises the risk of high blood pressure and other health problems. A new study suggests that using a mandibular advancement device (MAD) is just as effective as CPAP for reducing blood pressure in people with sleep apnea at risk for cardiovascular disease. #HarvardHealth https://t.co/nGb8RTcCrX
- Mar 30, 20266.7x their median
If you're a regular drinker of coffee or tea, you might rely on that morning cup to think more clearly through the day. A new study suggests your daily habit might help your brain in the long term, too. #HarvardHealth https://t.co/C32DYjq3Jm
- Oct 5, 20265.7x their median
Walking is an easy, accessible way to meet your exercise goals. To reap longevity benefits from a daily walk, you can walk either farther or faster, a new study suggests. #HarvardHealth https://t.co/NkN07LYLiK
- Aug 11, 20262.5x their median
Treatment might become more easily accessible, but it isn't right for everyone. #HarvardHealth https://t.co/md00b7aWsC
- Apr 14, 20262.0x their median
Maintaining good bone health, posture, and ergonomics can help. #HarvardHealth https://t.co/BLw98zCFOd
- Sep 21, 20262.3x their median
Some 3.5 million American men live with prostate cancer, often for many years. A new study suggests that changing the fats they eat might make a significant difference in the health and number of those years. #HarvardHealth #HealthyFat https://t.co/WlzGjYoHHd
- Jul 24, 20261.6x their median
Peptides are getting a lot of attention on social media, purporting to support everything from muscle growth and skin health to improved energy, cognitive function, and sleep quality. With all of the buzz, you may be wondering what these compounds are, what benefits they actually offer, and whether they’re safe. https://t.co/Axj6o6HBLe
Ranked by total interactions across everything we have tracked for this account, which is a longer history than the 30-day window the rates above use. The multiple compares each post to this account's own median.
Recurring topics
The most frequent hashtags in the sampled posts. They describe what this account writes about; they are not a performance signal, and the catalog-wide breakdown on the hub shows how little hashtag count moves.
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Reading these numbers
A typical post picks up 55 interactions against 2.4M followers, an engagement rate of 0.002%. Posts are seen about 16K times each, and 0.349% of those impressions turn into an interaction. That is about 0.665% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.2 posts a day over the last 30 days, though only 20% of days saw any activity at all. Most posts go out around 14:00 UTC, and Monday is the busiest day of the week. Of the 6 posts sampled, 100% link out. The account's strongest tracked post pulled 1.2K interactions, about 22x its own typical post. Only 6 original posts have been captured so far, fewer than the 8 posts we want behind a median before treating it as settled. Read the figures above as an early measurement of this account, not as a finished profile of it.
- What is Harvard Health's engagement rate on X?
- Harvard Health (@HarvardHealth) has an engagement rate of 0.002%, based on the median interactions across 6 original posts from the last 30 days against 2,371,203 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.002%, Harvard Health sits below the 10th percentile of the 204,491 accounts in this comparison. Those comparison accounts are all large ones, because our scanning cadence is weighted towards big accounts, so this is a ranking among peers of similar scale rather than a ranking across X.
- Does @HarvardHealth have real engagement?
- There is not yet enough sample to rank this account against others of its size.
- When does @HarvardHealth post?
- Most posts go out around 14:00 UTC, and Monday is its busiest day, at roughly 0.2 posts per day across the measured window.