As owner of a single member LLC can I claim my medical insurance payments as a business expense?

I read this article: https://turbotax.intuit.com/tax-tips/home-ownership/deducting-health-insurance-premiums-if-youre-sel... 

I am leaving my W2 job to startup my own business. I understand I have 3 options for medical insurance:

- COBRA through my existing employer

- go on my spouse's health plan (spouse has W2 job with another company)

- purchase my own insurance. How? Is this what Obamacare is (pardon my ignorance)?

Also which of these options are eligible for being claimed as a business expense or other type of deduction on my tax return?

The linked article says: 

• You can't claim the health insurance premium write-off for months when either you or your spouse were eligible to participate in an employer-subsidized health plan.

So does that mean even if I were to choose Option 3, I would still not be able to deduct my medical insurance expenses on my tax return?

Thanks!