Expert Q&A

Expert Answers — Supplement Questions Backed by Research

Common supplement questions answered by analyzing what top longevity experts actually say. Every answer includes expert stances, consensus scores, and specific recommendations from Huberman, Attia, Patrick, Johnson, and Hyman.

How much creatine should you take per day?

Is creatine safe for long-term use?

When is the best time to take creatine?

Does creatine help with brain function?

How much omega-3 should you take per day?

When should you take omega-3 fish oil?

Is krill oil better than fish oil?

Does omega-3 help with depression?

How much vitamin D should you take per day?

When should you take vitamin D?

Is vitamin D3 better than D2?

Should you take vitamin D with magnesium?

What is the best form of magnesium to take?

How much magnesium should you take per day?

Does magnesium help with sleep?

Does ashwagandha actually work for stress and anxiety?

When should you take ashwagandha — morning or night?

Can you take ashwagandha and magnesium together?

How much zinc should you take per day?

Can you take zinc and magnesium together?

Do probiotics actually work?

Does NAC boost glutathione levels?

Does collagen actually help your skin?

Should you take vitamin D with K2?

Should you take NMN or NR for longevity?

Is melatonin safe to take every night?

How much CoQ10 should you take per day?

Is curcumin worth taking daily?

When should you drink coffee?

Does sulforaphane help with detoxification?

Is berberine safe to take?

Does glycine help with sleep?

Should you take iron supplements?

How much sodium should you have per day?

Does astaxanthin help with eye health?

Does vitamin C actually boost immunity?

Do you need B12 supplements?

Magnesium glycinate vs threonate — which is better for sleep?

Why do I wake up at 3am even though I take magnesium?

How much protein per day for longevity?

Does creatine raise creatinine and damage your kidneys?

How much melatonin should you take?

How much Zone 2 cardio should you do per week?

How much protein per day should you eat after 50?

Is intermittent fasting safe for women?

Does collagen work for skin, joints, or muscle?

Is 5000 IU of vitamin D too much?

Is protein 1 gram per pound or per kilogram of body weight?

What is a good ApoB level?

APOE4 diet — keto or Mediterranean?

How much creatine should a woman take?

Does creatine help with menopause and perimenopause?

Is 20g of creatine a day too much?

Is HRT safe now? What the FDA change and the experts actually say

What did the WHI study actually show about HRT?

When should you start HRT — and can you start in perimenopause?

Is the estrogen patch safer than pills? (Transdermal vs oral)

Does HRT cause breast cancer? What the numbers actually say

Is vaginal estrogen safe?

Do AirPods cause brain damage from EMF radiation?

Does creatine cause hair loss?

Are seed oils bad for you?

Does NMN reverse aging?

Is red wine good for your heart?

Is cardio a waste of time?

Does sweating detox your body?

Does keeping your phone in your pocket lower testosterone?

Do AirPods cause hearing loss?

Do you lose muscle on Ozempic (GLP-1s) — and how do you prevent it?

How much protein should you eat on a GLP-1 to keep muscle?

What happens when you stop a GLP-1?

Do GLP-1s raise your heart rate?

Does microdosing a GLP-1 actually work?

Is there a natural Ozempic? What actually raises GLP-1?

Retatrutide vs tirzepatide vs semaglutide: what's the difference?

What does a GLP-1 do besides weight loss?

Does BPC-157 actually work? What the evidence shows

Are peptides safe? FDA-approved vs gray-market

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