Attorney General Jeff Sessions testifies before the Senate Intelligence Committee on June 13. (Melina Mara/The Washington Post)

Attorney General Jeff Sessions adamantly opposes legalizing marijuana. But this position may not be in his own self-interest.

A study published last month by the medical journal Nature Medicine found that when older mice were given low doses of THC, the chemical in cannabis that makes people high, the rodents’ learning and memory improved to the level of younger mice.

Researchers are planning to repeat the study on 60-to-70-year-old humans to see whether they, too, have improved memory when consuming pot. After the attorney general’s testimony before the Senate Intelligence Committee on Tuesday afternoon, he might be a prime candidate for the study.

Here, pulled from the hearing transcript, is Jeff Sessions, in his own words:

I do not have any recollection of meeting or talking to the Russian ambassador or any other Russian officials.

I would have — gladly have reported the meeting, the encounter that may have occurred — that some say occurred in the Mayflower, if I had remembered it, or if it actually occurred, which I don’t remember that it did.

I guess I could say that I possibly had a meeting, but I still do not recall it.

I’d have to rack my brain, but I don’t recall it now.

I don’t recall it, Sen. Warner.

I don’t recall that, Sen. Rubio. I’d have to think about that.

I don’t recall it, Sen. Manchin.

We may have discussed that. I just don’t have a real recall of the meeting.

I don’t have any recollection of even knowing he would be there.

I did not remember that — I did not remember that, but I understand he was there. And so I — I don’t doubt that he was. I believe that representations are correct. In fact, I recently saw a video of him coming into the room.

I don’t recall any such conversation.

I don’t recall him ever having such a conversation.

Nor do I recall any conversations with any Russian officials at the Mayflower Hotel.

I don’t — not recall any of those individuals having any meeting with Russian officials …

I don’t recall it.

I don’t recall.

Q: Do you recall that article when it came out?
A: Not exactly.

Q: And you don’t recollect whether Mr. Kushner had any conversations with Ambassador Kislyak at that session?
A: I do not.

Q: You never remember having a conversation or a meeting with Ambassador Kislyak?
A: I do not.

Q: Just on the first page of your three pages of written testimony, you wrote, “nor do I recall,” “do not have recollection,” “do not remember it.” So my question is for any of your testimony today, did you refresh your memory with any written documents?
A: I attempted to refresh my recollection, but so much of this is in a — in a wholesale campaign of extraordinary nature that you’re moving so fast that you don’t keep notes.

I don’t have a detailed memory of that …

I don’t recall whether that was discussed or not.

I don’t recall that being discussed.

Not to my recollection.

I have no recollection of a discussion with the Russian ambassador.

If any brief interaction occurred in passing with the Russian ambassador during that reception, I do not remember it.

It’s conceivable that that occurred. I just don’t remember it.

I don’t have a detailed memory of that.

I don’t recall.

I don’t recall that.

I don’t recall it.

I don’t recall any.

I — I don’t recall.