Questions tagged [concentration]

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1answer
40 views

What is the meaning of doubling of bioavailability?

I took this extract from here: https://en.wikipedia.org/wiki/Bioavailability The oral bioavailability of methyltestosterone is about 70%, and it is well-absorbed from the gastrointestinal tract.[...
3
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2answers
66 views

why does having a bad cold make thinking harder

I find when I have a bad cold and talking to other people it isn't just me, that thinking feels like really hard work and the simplest job becomes really tricky. Does anybody know why?
1
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1answer
51 views

Brain performance suppliments [closed]

My 27 years old brain lacks concentration and memory, mood to perform daily task is lazy. I used to have a test most of the vitamins are ok except D and B complex Below average a little bit. Which ...
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0answers
17 views

Good “study” foods? Which foods imporve cognitive abilities, memory, concentration & overall mental performance?

Just gearing up for a major academic exam -- was curious -- what foods are recommended as "study" foods? What foods should I eat while studying and for consuming on the day before/day-of the exam? By ...
1
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1answer
97 views

How long does it take for iron supplements to start improving energy levels? Is it instant or gradual?

I have a myriad of reasons for my fatigue, shortness of breath, lack of motivation, headaches, lack of concentration, feeling very cold in my feet/hands, etc. (I have hypothyroidism, PCOS, ...
1
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0answers
18 views

Eating ice-cream for breakfast may improve mental performance & alertness? Legit?

First, before I get slammed by everyone for this seemingly "outrageous" question -- I have to say, I am highly doubtful and leery of this claim, which is why I'm asking. Actually, I am fairly certain ...
1
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0answers
31 views

Plasma concentrations Of Beta-Carotene and Retinol

I'm doing an analysis, and retinol and beta carotene are involved. I need to know : 1) Normal levels of dietary beta carotene and Retinol consumed (mcg per day); 2) Normal levels of plasma retinol ...
3
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0answers
46 views

Can one learn whilst sleeping? Can one solidify a memory & study for exams by listening to recordings while asleep?

I have ADD (not ADHD) and I am a PhD student so concentration is something that I consistently struggle with on a daily basis. Though I do take medications take medications for adult ADD, I am still ...
4
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0answers
75 views

Natural but scientific ways to improve memory and concentration

There's a lot of websites on internet that claim a number of games, exercises and diets to be actually helpful in this regard but they do not provide any authentic citation. Some of them are ...
3
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2answers
220 views

Can I take nootropics if I was on seizure medication 5+ years ago?

So as a college student, we need to perform mentally demanding work and I recently found out about "all natural" pills that can increase focus and alertness. So I decided I am going to try them to see ...
4
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0answers
289 views

Why can thinking make a headache worse?

I sometimes get headaches where if I try and ignore them and continue with my work, they get so bad I feel sick and have to have a lie down until it passes. I've found that the best thing to do is ...