89
votes
Accepted
Does milk make your bones stronger?
A summary of recent evidence suggests:
In children with initial low calcium intake, an increase in milk/dairy intake is associated with an increase in bone density.
In adults, milk/dairy consumption ...
- 4,994
23
votes
Accepted
Is any unconscious person capable of full splits?
No. The claim, that "when unconscious, we are all capable of full splits", is not supported by evidence.
There is not a great deal of literature on this topic. One paper on a similar topic “...
- 1,520
12
votes
Does the heart pump blood through arteries?
Your reasoning is faulty. You assume that the capillaries are a single tube of length 60,000 miles. In fact they are many tubes running in parallel, so the flow of blood is divided between parallel ...
- 15.8k
12
votes
Accepted
Does too much sex, or STDs, cause urination after sneezing?
TL;DR version: Of the potential risk factors listed, pregnacy is the only one for which there is some systematic evidence linking it to this type of "sneeze pee" incontinence, called stress ...
- 59.6k
10
votes
Accepted
Do the ulna and radius in the left arm take up more volume than the ulna and radius in the right arm?
Based upon Bilateral Asymmetry in Weight and in Length of Human Bones The Anatomical Record vol. 152, pages 217-224, the right, not the left is bigger.
On average the right ulna is 2.419 mm longer ...
- 105k
8
votes
Is the average temperature of a healthy human adult 98.6F/37C?
The average rectal temperature is 36.85 °C
Relative to the average rectal temperature, other parts of the body are:
Mouth -0.45 to -0.30
Esophagus -0.30 to -0.20
Stomach -0.20 to -0.10
Vagina -0....
- 105k
7
votes
Are male and female brains connected in a completely different manner?
The study being referenced is almost certainly Sex differences in the structural connectome of the human brain by Ingalhalikar et al, PNAS 111 (2) 823-828.
The description of the figure in the Italian ...
- 3,126
5
votes
Is the quantity and/or quality of milk produced in a female human related to the appearance of her breasts?
If there is an effect of breast size on milk production, it is not a large one.
The Influence of Breast Surgery, Breast
Appearance, and Pregnancy-Induced Breast
Changes on lactation Sufficiency as ...
- 141k
3
votes
Does parsley help in cleansing the kidneys?
The sources from the OPs question are ‘naturally’ (and) dubious. Both in their presentation and claims.
For ‘cleaning a kidney’ a human body needs adequate amounts of water. Calling a concept relating ...
- 44k
3
votes
Length of uncoiled human DNA
@Sklivvz posted a good back of the envelope theoretical answer, but it is off by a factor of 10 for the following reason:
An estimation of the number of cells in the human body Annals of Human ...
- 105k
3
votes
Does the right eye feed information to the left brain hemisphere while the left eye feeds information to the right brain hemisphere?
No, the right half of the field of vision goes to the left brain, and vice versa. A quick search showed up a book by a Harvard professor with this quote:
A massive stroke in the left side of the ...
- 8,459
2
votes
Does too much sex, or STDs, cause urination after sneezing?
According to URETHRAL DIVERTICULA by Eric S. Rovner:
Peters and Vaughn [reference 30] found a strong association between concurrent or previous infection with Neisseria gonorrhea and urethral ...
- 105k
2
votes
Is any unconscious person capable of full splits?
The study ( “Neurophysiologic influences on hamstring flexibility: a pilot study” ) mentioned above clearly says:
"Overall, the intraoperative angle was significantly greater than the postoperative ...
- 29
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