Lauryn Bosstick

The first part is correct. Fibre adds bulk and softness to stools and demonstrably helps against constipation. The second part is not an established concept: your intestines do not need to be cleansed and do not do so through fibre. What fibre does do is feed your gut bacteria, which in turn produce substances that benefit your intestinal lining.

The general point is correct: UV radiation is by far the most important cause of visible skin ageing, more so than age itself. The percentage is a widely cited estimate from photoageing research rather than a measured value; 80 percent also appears in the literature. What matters is the direction, not the exact figure: sun protection does more for your skin than any cream.

There is no universal absorption rate for supplements, and therefore no figure of 16 percent either. How much you absorb varies enormously depending on the substance and its form: magnesium oxide is absorbed at only a few percent, magnesium citrate considerably more, and vitamin C from a tablet is absorbed almost completely. A single low number applied to all supplements at once is a sales argument for more expensive forms.

That microneedling stimulates collagen production is plausible and has been measured. The figure itself is wrong. The most widely cited study reported up to 400 percent after four treatments in a handful of people, and percentages like these say little because they depend on where and how you measure. A precise figure like 600 percent belongs in a sales pitch, not in a research finding.

There is evidence, but less than the confidence of the claim suggests. In small studies involving men with hereditary hair loss, microneedling on top of minoxidil produced more hair growth than minoxidil alone. However, the studies involved few participants, ran for short periods, and almost always used microneedling in combination with a treatment that already works on its own. As a standalone treatment, it has not been proven.

Mechanically this makes sense: with the mouth closed you breathe through your nose, and small studies do see some effect in cases of mild snoring. However, the research is still in its early stages, and with a blocked nose or sleep apnea, taping the mouth can actually be dangerous.

There is no scientific evidence for the idea that mouth tape strengthens or shapes your jawline through tongue posture. It relies on the controversial mewing theory, and in adults the jawline demonstrably does not change as a result.

Nasal breathing has real advantages: the nose filters, humidifies and produces nitric oxide, which can support oxygen absorption. However, claiming a significantly higher oxygen absorption is stronger than the research supports; the measured differences are small and vary across studies.

This is correct for the most commonly used fillers: hyaluronic acid fillers can be dissolved with the enzyme hyaluronidase. Permanent fillers such as PMMA cannot be reversed, so 'many' is exactly the right word. → Does hyaluronic acid applied to your skin actually help against dryness and wrinkles?

There is virtually no research on this; it is the practical experience of injectors. Interesting for the cosmetic world, but without studies nothing can be substantiated.