Hillary Lin, MD

Real talk: What motivates your health journey more? 🧠💪

The healthcare industry usually sells "Fear" (scaring you about disease and aging).

But at CareCore, we believe Longevity is actually the ultimate form of "Self-Improvement." It's about biology as a competitive advantage.

I want to know what drives YOU.

Poll Options:
⦿ Fear (I want to avoid disease)
⦿ Performance (I want to feel/think better)
⦿ Aesthetics (I want to look better)
⦿ Family (I want to be there for them)

Comment below: Do you think "Biohacking" has replaced "Hustle Culture"? 👇

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1 day ago | [YT] | 17

Hillary Lin, MD

I prescribe supplements to my patients that I explicitly refuse to take myself. 🚫💊

Why? Because what optimizes their biology actually breaks mine.

A perfect example is Creatine. The data on it is incredible for muscle and brain health. But for me, the way it recycles ATP interferes with my sleep pressure, causing insomnia.

It’s a "good" supplement that is bad for me.

Question: Have you ever tried a popular "health hack" or supplement that everyone loved, but made you feel worse?

Vote or comment below 👇

Poll Options:
⦿ Yes, I've had bad reactions.
⦿ No, I stick to the basics.
⦿ I'm currently taking Creatine.

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4 days ago | [YT] | 20

Hillary Lin, MD

🛑 𝐓𝐡𝐞 𝟐𝟑-𝐘𝐞𝐚𝐫 𝐌𝐢𝐬𝐭𝐚𝐤𝐞: 𝐖𝐡𝐲 𝐭𝐡𝐞 𝐅𝐃𝐀 𝐜𝐡𝐚𝐧𝐠𝐞𝐝 𝐢𝐭𝐬 𝐦𝐢𝐧𝐝 𝐨𝐧 𝐇𝐑𝐓

For two decades, the medical standard was to avoid Hormone Replacement Therapy (HRT) at all costs. A 2002 study convinced the world it was dangerous, causing usage to drop from 40% to less than 5%.

𝐁𝐮𝐭 𝐭𝐡𝐞 𝐝𝐮𝐬𝐭 𝐡𝐚𝐬 𝐟𝐢𝐧𝐚𝐥𝐥𝐲 𝐬𝐞𝐭𝐭𝐥𝐞𝐝, 𝐚𝐧𝐝 𝐡𝐞𝐫𝐞 𝐢𝐬 𝐰𝐡𝐚𝐭 𝐰𝐞 𝐤𝐧𝐨𝐰: The study that scared everyone was fundamentally flawed. It focused on women who were already too old for prevention (avg. age 63) and used synthetic hormones.

It was never a fair representation of modern, bioidentical therapy started at the onset of menopause.

FDA officials have recently shifted their tone, comparing the potential impact of HRT to antibiotics and vaccines. This is a massive win for women's health.

Do not let 20-year-old fear stop you from getting modern care. We need to focus on the 𝐦𝐨𝐥𝐞𝐜𝐮𝐥𝐚𝐫 𝐛𝐞𝐧𝐞𝐟𝐢𝐭𝐬—protecting your heart, brain, and bones.

👇 𝐈 𝐰𝐚𝐧𝐭 𝐭𝐨 𝐡𝐞𝐚𝐫 𝐟𝐫𝐨𝐦 𝐲𝐨𝐮:

Poll: What is your current stance on HRT?

🔘 I'm currently taking it
🔘 I want to, but I'm scared
🔘 My doctor won't prescribe it
🔘 I don't need it yet

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1 week ago | [YT] | 6

Hillary Lin, MD

🚶‍♀️ You don’t need 10,000 steps (Do this instead)

I know how easy it is to feel guilty when you look at your watch and see only 3,000 steps at the end of a busy workday.

We have been conditioned to believe that 10,000 is the magic number for health. But the truth is, that number was invented by a marketing team selling pedometers in the 1960s.

Real clinical data tells a more forgiving story.

A major Harvard study followed over 13,000 women and found that the "sweet spot" for baseline longevity is actually around 4,000 steps.

Hitting that achievable number was associated with a 40% reduction in cardiovascular death.

This is a win for "accessible longevity." You don't need to spend two hours a day walking to save your heart. You need about 30 to 40 minutes. You can even stack your steps on the weekends if your weekdays are packed.

If you can do more, great. But if you can't, 4,000 is enough to make a clinically significant difference.

Let's stop making health feel like a punishment.

Poll: Be honest, what is your average daily step count?
🔘 < 3,000 (Sedentary)
🔘 4,000 - 6,000 (Active)
🔘 8,000+ (High Active)
🔘 I don't track it

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1 week ago | [YT] | 18

Hillary Lin, MD

🛑 Stop taking 10mg of Melatonin (Read this)

You’ve likely seen the headlines: "Melatonin linked to 90% higher heart failure risk."

Before you panic, let's look at the data. This study of 130,000 people found a significant correlation between long-term use and mortality. While it doesn't prove causation (people who take sleep aids are often already unhealthier), it highlights a massive blind spot in the wellness community.

We are overdosing on Melatonin.

Melatonin is a hormone. Your body makes tiny amounts (0.03 mg to 0.1 mg). Standard pills deliver 100x to 1000x that amount. We have normalized supraphysiologic dosing just because it's sold over the counter.

My take: I use melatonin for timing, not sedation.
1. Format: Liquid drops only.
2. Dose: 0.1 mg to 0.3 mg (physiologic range).
3. When: Only for jet lag or resetting my clock.

If you are relying on high-dose hormones to knock you out every night, we need to look at the root cause of your sleep issues, not just mask them.

Poll: How much melatonin do you take?
🔘 None
🔘 < 1mg
🔘 3-5mg
🔘 10mg+

Subscribe for more deep dives into longevity science.

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2 weeks ago | [YT] | 14

Hillary Lin, MD

Will your primary care doctor eventually be replaced by Amazon?

Tech companies aren't building better medicine. They're building better logistics. And for women's health, that might matter more.

When Amazon's One Medical launched dedicated menopause care, they bet on something simple: removing friction would win more patients than clinical innovation.

No waiting months for a specialist. No getting dismissed by a PCP. No navigating a system designed around billing codes instead of outcomes.

Real question—where do you think healthcare is headed?

A) Tech companies will replace most primary care
B) They'll exist alongside traditional doctors
C) I don't trust Big Tech with my health data
D) I just want my hormones—I don't care who prescribes them

Curious where you land on this. 👇

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2 weeks ago | [YT] | 8

Hillary Lin, MD

If your doctor said "this anxiety med will change your gut microbiome for the next 3 years," would you still fill the prescription?

New research on 2,500+ patients found that SSRIs, benzos, beta-blockers, and PPIs all leave detectable changes in gut diversity—years after you stop taking them.

Not days. Not weeks. Years.

Honest question—what would you do?

A) Take it anyway. The condition matters more.
B) Look harder for lifestyle alternatives first.
C) Take it, but add a serious gut-repair protocol.
D) I had no idea non-antibiotics did this.

Drop your answer + any long-term effects you've noticed below. 👇

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2 weeks ago | [YT] | 16

Hillary Lin, MD

Would you take a gene therapy that reversed aging?

New data in Science: Researchers transferred a gene from naked mole-rats (who live ~37 years) into already-aged mice.

The result? Reversed frailty. Stopped graying. Lowered inflammation.

The mechanism: It flips DNA repair from "fast and sloppy" to "slow and perfect."

If this existed today, what would you do?

A) Take it immediately
B) Wait for 10 years of safety data
C) Stick with lifestyle interventions

Curious where you land on the risk/reward.

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3 weeks ago | [YT] | 19

Hillary Lin, MD

I have a confession to make.

As a longevity physician, I get pitched "breakthrough" products every single day. Magic pills, expensive protocols, and "miracle" molecules.

But the data tells a very different story.

We haven't actually extended the maximum human lifespan since 1997. A lot of what is sold as "anti-aging" is just experimental science using regulatory loopholes to bypass the FDA.

I see so many people stressing over which $100 supplement to buy, while neglecting their sleep or their cardio.

𝐓𝐡𝐞 𝐛𝐨𝐫𝐢𝐧𝐠 𝐬𝐭𝐮𝐟𝐟 𝐢𝐬 𝐬𝐭𝐢𝐥𝐥 𝐭𝐡𝐞 𝐦𝐨𝐬𝐭 𝐩𝐨𝐭𝐞𝐧𝐭 𝐬𝐭𝐮𝐟𝐟. Exercise, sleep, blood pressure control, and community will do more for your lifespan than any supplement currently on the market.

I wrote a full breakdown on this for 𝐍𝐞𝐰 𝐙𝐚𝐩𝐢𝐞𝐧𝐬 - Comment with GUIDE and I'll send it over. 👇

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4 weeks ago | [YT] | 40

Hillary Lin, MD

𝐖𝐡𝐲 𝐫𝐢𝐜𝐡 𝐩𝐞𝐨𝐩𝐥𝐞 𝐬𝐭𝐢𝐥𝐥 𝐚𝐠𝐞 𝐩𝐨𝐨𝐫𝐥𝐲.

It’s not because they lack the money. It’s because they lack the 𝐛𝐚𝐧𝐝𝐰𝐢𝐝𝐭𝐡.

The biggest lie in longevity is that it’s a "rich person's game." The truth? The most expensive currency in health isn't Cash. It's 𝐀𝐭𝐭𝐞𝐧𝐭𝐢𝐨𝐧.

I can give a patient the perfect protocol. But if they don't budget the mental energy to track it, the money is irrelevant.

Insurance covers the car crash.

You have to pay for the maintenance.

See the slides above for the "3 Currencies of Health."

𝐏𝐨𝐥𝐥: Be honest—if I gave you a perfect longevity protocol for FREE today, what would stop you from doing it?

𝐏𝐨𝐥𝐥 𝐎𝐩𝐭𝐢𝐨𝐧𝐬:
- I don't have the TIME ⏳
- I'd be too LAZY to track it 🧠
- I'd be afraid of the RISKS 😨
- Nothing—I'd crush it 🚀

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1 month ago | [YT] | 25